In my Wikibase the valid EDTF string XXXX maps correctly maps to +0000-00-00T00:00:00Z in xsd:datetime, but without the proper datatype in the export to Blazegraph. So "+0000-00-00T00:00:00Z" should be "+0000-00-00T00:00:00Z"^^xsd:dateTime
So this TTL should have an additional ^^xsd:dateTime
In my Wikibase the valid EDTF string XXXX maps correctly maps to +0000-00-00T00:00:00Z in xsd:datetime, but without the proper datatype in the export to Blazegraph. So
"+0000-00-00T00:00:00Z"
should be"+0000-00-00T00:00:00Z"^^xsd:dateTime
So this TTL should have an additional
^^xsd:dateTime
This query:
should not yield