メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.2687500 42.4791667, 143.2750000 42.4791667, 143.2750000 42.4833333, 143.2687500 42.4833333, 143.2687500 42.4791667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral