メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.173918556958 34.6546529630293, 135.173812030777 34.6549061105407, 135.173398857733 34.6547737428741, 135.172961118648 34.6546392896426, 135.173083347557 34.6543206779263, 135.173295237142 34.6536994545839, 135.174211592324 34.6539658208952, 135.174200435776 34.6539919847434, 135.173918556958 34.6546529630293)) ^^http://www.opengis.net/ont/geosparql#wktLiteral