メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.174211592324 34.6539658208952, 135.173295237142 34.6536994545839, 135.173701228802 34.6525833219775, 135.173722272046 34.6525065501213, 135.174014139019 34.6525112952983, 135.174859582586 34.6525099591381, 135.174611451949 34.6530548215585, 135.174211592324 34.6539658208952)) ^^http://www.opengis.net/ont/geosparql#wktLiteral