add CQ8

Author: kschweikert

competencyQuestions/CQ8.rq

@@ -0,0 +1,12 @@
+#  What locations have had multiple reported PFAS releases over time?
+PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
+PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
+PREFIX coso: <http://w3id.org/coso/v1/contaminoso#>
+
+SELECT ?rf ?rfLabel (COUNT(?obs) as ?obsCount) 
+WHERE {
+	?rf a coso:ReleaseFeature;
+   		rdfs:label ?rfLabel.
+    ?obs coso:hasFeatureOfInterest ?rf.
+} group by ?rf ?rfLabel
+HAVING (?obsCount > 1)