Errors:
  Focus: https://biolink.github.io/biolink-model/ontology/biolink.ttl
  Start: http://bioentity.io/vocab/SchemaDefinition
  Reason:   Testing <https://biolink.github.io/biolink-model/ontology/biolink.ttl> against shape http://bioentity.io/vocab/Element
    Datatype constraint (http://www.w3.org/2001/XMLSchema#string) does not match BNode _:b1
    _:b1 context:
        ("rdf"
         "rdfs"
         "xsd"
         "skos"
         "OIO"
        )