メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((124.7125000 24.6541667, 124.7187500 24.6541667, 124.7187500 24.6583333, 124.7125000 24.6583333, 124.7125000 24.6541667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral