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‎competencyQuestions/CQ11.rq‎

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# All surface water and animal tissue sample results from one samplepoint
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# Find all surface water and animal tissue sample results that report the contamination by an individual substance from one samplepoint (Maine EGAS SamplePoint 65555).
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# SUCCESSFULLY TESTED ON FRINK 2026-03-02
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PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
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PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
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PREFIX qudt: <http://qudt.org/schema/qudt/>
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#Filter to a specific substance:
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# VALUES ?substance {}.
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?measure coso:measurementValue ?value.
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OPTIONAL{?measure coso:measurementUnit ?unit.}
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?measure coso:measurementValue ?value.
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OPTIONAL { ?measure coso:measurementUnit ?unit.}
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FILTER NOT EXISTS{ ?measure a coso:AggregateContaminantMeasurement} #remove results that are aggregates
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} GROUP BY ?materialSample ?observation ?substance ?substanceL ?value ?unit
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LIMIT 100
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} GROUP BY ?materialSample ?observation ?substance ?substanceL ?value ?unit

‎competencyQuestions/CQ12.rq‎

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# Retrieve all sample points and count how many there are for each type of sample point
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# Retrieve how many sample points are there for each different type of sample point.
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# SUCCESSFULLY TESTED ON FRINK 2026-03-02
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PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
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PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>

‎competencyQuestions/CQ13.rq‎

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# Retrieve all marine samplepoints and determine what and how many of each sample type are there
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# Retrieve all marine samplepoints and determine what types they are and how many of each type there are
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# SUCCESSFULLY TESTED ON FRINK 2026-03-02
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PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
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PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
@@ -7,6 +8,7 @@ PREFIX coso: <http://w3id.org/coso/v1/contaminoso#>
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PREFIX me_egad_data: <http://w3id.org/sawgraph/v1/me-egad-data#>
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PREFIX us-wqp-data: <http://w3id.org/sawgraph/v1/us-wqp-data#>
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SELECT ?sampletype ?typeLabel (COUNT(?sample) as ?no_samples) WHERE {
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?sp rdf:type coso:SamplePoint;
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coso:pointFromFeature ?feature.

‎competencyQuestions/CQ15.rq‎

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#Find all soil samples that detected PFOS above the detection limit.
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# SUCCESSFULLY TESTED ON FRINK 2026-03-02
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PREFIX ds: <http://purl.org/ctic/dcat#>
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PREFIX dcterms: <http://purl.org/dc/terms/>
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PREFIX qudt: <http://qudt.org/schema/qudt/>
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PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
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PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
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PREFIX owl: <http://www.w3.org/2002/07/owl#>
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PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
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PREFIX skos: <http://www.w3.org/2004/02/skos/core#>
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PREFIX coso: <http://w3id.org/coso/v1/contaminoso#>
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PREFIX dsstox: <http://w3id.org/DSSTox/v1/>
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SELECT * WHERE {
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?sample a coso:MaterialSample; # all samples
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a coso:SoilSample; # soil samples
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coso:sampleOfMaterialType/rdfs:label ?sampleType. # with type labels
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?observation coso:analyzedSample ?sample ;
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coso:ofSubstance ?substance; # that were tested for a specific substance
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coso:hasResult ?result.
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?substance rdf:type dsstox:ChemicalEntity ;
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skos:altLabel ?substanceLabel.
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VALUES ?substance {dsstox:DTXSID3031864} # where the substance is PFOS
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?result coso:measurementValue ?measurement.
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FILTER NOT EXISTS {?measurement owl:sameAs coso:non-detect. }
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} ORDER BY ?value

‎competencyQuestions/CQ16.rq‎

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# What are all the information that qualifies the results of measurement X?
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# SUCCESSFULLY TESTED ON FRINK 2026-03-02
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PREFIX qudt: <http://qudt.org/schema/qudt/>
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PREFIX coso: <http://w3id.org/coso/v1/contaminoso#>
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PREFIX me_egad_data: <http://w3id.org/sawgraph/v1/me-egad-data#>
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PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
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PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
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SELECT *
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WHERE{
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VALUES ?measurement{me_egad_data:result.L204794007RE.AAWH.20201030.68259121} #us_wqp_data:d.wqp.measurement.STORET-987908414
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?measurement a coso:ContaminantMeasurement;
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?p ?qualifier .
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?p rdfs:subPropertyOf coso:hasResultQualifier .
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}

‎competencyQuestions/CQ2.rq‎

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PREFIX ds: <http://purl.org/ctic/dcat#>
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# What soil samples have been tested for PFBS?
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# SUCCESSFULLY TESTED ON FRINK 2026-03-02
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PREFIX dcterms: <http://purl.org/dc/terms/>
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PREFIX qudt: <http://qudt.org/schema/qudt/>
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PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
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PREFIX coso: <http://w3id.org/coso/v1/contaminoso#>
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PREFIX dsstox: <http://w3id.org/DSSTox/v1/>
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# What soil samples have been tested for PFBS? What is min and max result?
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SELECT * WHERE {
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?sample a coso:MaterialSample; # all samples
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a coso:SoilSample; # soil samples
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coso:sampleOfMaterialType/rdfs:label ?sampleType; # with type labels
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^coso:analyzedSample ?observation.
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?observation coso:ofDSSToxSubstance ?dtxsid; # that were tested for a specific substance
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coso:ofDSSToxSubstance/rdfs:label ?substanceName;
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?observation coso:ofSubstance ?dtxsid; # that were tested for a specific substance
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coso:ofSubstance/rdfs:label ?substanceName;
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coso:hasResult ?measurement.
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?measurement coso:measurementValue ?value;
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coso:measurementUnit/qudt:symbol ?unit.
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VALUES ?dtxsid{dsstox:DTXSID5030030} # where the substance is PFBS
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VALUES ?substanceName{"Perfluorobutanesulfonic acid"} # Can alternately search substance by name
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VALUES ?dtxsid{dsstox:DTXSID5030030} # # where the substance is PFBS
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#VALUES ?substanceName{"Perfluorobutanesulfonic acid"} # Can alternately search substance by name
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} ORDER BY ?value

‎competencyQuestions/CQ2_V2.rq‎

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# What soil samples have been tested for PFBS? What is the min and max result?
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# SUCCESSFULLY TESTED ON FRINK 2026-03-02
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PREFIX owl: <http://www.w3.org/2002/07/owl#>
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PREFIX dcterms: <http://purl.org/dc/terms/>
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PREFIX qudt: <http://qudt.org/schema/qudt/>
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PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
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PREFIX coso: <http://w3id.org/coso/v1/contaminoso#>
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PREFIX dsstox: <http://w3id.org/DSSTox/v1/>
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SELECT (max(?value) as ?max_value) (min(?value) as ?min_value) WHERE {
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?sample a coso:MaterialSample; # all samples
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a coso:SoilSample; # soil samples
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coso:sampleOfMaterialType/rdfs:label ?sampleType; # with type labels
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^coso:analyzedSample ?observation.
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?observation coso:ofSubstance ?dtxsid; # that were tested for a specific substance
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coso:ofSubstance/rdfs:label ?substanceName;
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coso:hasResult ?measurement.
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?measurement coso:measurementValue ?value;
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coso:measurementUnit/qudt:symbol ?unit.
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FILTER NOT EXISTS {?value owl:sameAs coso:non-detect } # and
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VALUES ?dtxsid{dsstox:DTXSID5030030} # where the substance is PFBS
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} ORDER BY ?value

‎competencyQuestions/CQ3.rq‎

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# What wells have been tested for PFOA (CAS number 335671) at levels below 20 ppt or it was not detected?
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# SUCCESSFULLY TESTED ON FRINK 2026-03-02
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PREFIX dcterms: <http://purl.org/dc/terms/>
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PREFIX qudt: <http://qudt.org/schema/qudt/>
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PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
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PREFIX coso: <http://w3id.org/coso/v1/contaminoso#>
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PREFIX me_egad_data: <http://w3id.org/sawgraph/v1/me-egad-data#>
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# What wells have been tested for PFOA at levels below 20 ppt or it was not detected?
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SELECT * WHERE {
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?feature coso:ofFeatureType ?featureType; # all features
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^coso:pointFromFeature/^coso:observedAtSamplePoint ?observation. # with observations

‎competencyQuestions/CQ4.rq‎

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# Samples (in Maine) from what surface water bodies have a cumulative PFAS contamination result of above 20 ppt?
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# SUCCESSFULLY TESTED ON FRINK 2026-03-02
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PREFIX qudt: <http://qudt.org/schema/qudt/>
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PREFIX unit: <http://qudt.org/vocab/unit/>
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PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
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PREFIX coso: <http://w3id.org/coso/v1/contaminoso#>
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PREFIX me_egad_data: <http://w3id.org/sawgraph/v1/me-egad-data#>
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# Samples from what surface water bodies have a cumulative contamination result of above 20 ppt?
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SELECT ?feature ?featureType ?sample ?date (SUM(?value) as ?cumulativeConcentration) ?unit WHERE {
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?sample a coso:WaterSample; # All Water Samples
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a ?surfaceWater; # of a particular class (surface water)

‎competencyQuestions/CQ5.rq‎

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# What is the mean concentration of PFOA in fish tissue in Maine?
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# What is the mean concentration of all different PFAS tested for in fish tissue in Maine?
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# SUCCESSFULLY TESTED ON FRINK 2026-03-02
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PREFIX kwgr: <http://stko-kwg.geog.ucsb.edu/lod/resource/>
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PREFIX kwg-ont: <http://stko-kwg.geog.ucsb.edu/lod/ontology/>
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PREFIX coso: <http://w3id.org/coso/v1/contaminoso#>
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PREFIX obo: <http://purl.obolibrary.org/obo/>
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select ?substance ?unit (AVG(?value) as ?AvgConcentration) (COUNT(?observation) as ?sampleCount) where {
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?observation a coso:ContaminantSampleObservation; # All observations
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coso:analyzedSample ?sample; # with related samples
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?region a kwg-ont:AdministrativeRegion_3. # administrative region (town/township)
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?measurement coso:measurementValue ?value; # with the result value
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coso:measurementUnit ?unit. # and unit
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#SERVICE <repository:Spatial>{
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?region kwg-ont:administrativePartOf+ kwgr:administrativeRegion.USA.23 # Where the town is part of Maine
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#}
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} GROUP BY ?substance ?unit

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