メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((134.633009328105 34.792814191193, 134.633024076626 34.795311163837, 134.629614948716 34.7953095287283, 134.629599275161 34.7928379154029, 134.633009328105 34.792814191193)) ^^http://www.opengis.net/ont/geosparql#wktLiteral