Some Linked Art examples are not validating against JSON Schema defined in this repository

[beaudet]

Please review the attached log file. Many of the entries are due to there being no "part" definition in object.json, but there are others. We also might be missing a couple of schema files.

Please also review the following mapping between LA entities and the corresponding schema file that should be used for validating that entity.

       entityAliases.put("activity",             "provenance");
       entityAliases.put("type",                 "concept");
       entityAliases.put("propositionalobject",  "concept");
       entityAliases.put("digitalobject",        "digital");
       entityAliases.put("group",                "group");
       entityAliases.put("humanmadeobject",      "object");
       entityAliases.put("person",               "person");
       entityAliases.put("place",                "place");
       entityAliases.put("set",                  "set");
       entityAliases.put("linguisticobject",     "text");
       entityAliases.put("visualitem",           "visual")

2021-12-20 15:04:10 WARN  LinkedArtValidator:156 - No JSON Schema file for Type (a.k.a. concept)
2021-12-20 15:04:10 WARN  LinkedArtValidator:156 - No JSON Schema file for PropositionalObject (a.k.a. concept)
2021-12-20 15:04:33 WARN  LinkedArtValidator:156 - No JSON Schema file for VisualItem (a.k.a. visual)

existing_validation_errors.txt.zip

[azaroth42]

Thanks! Will review.