メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.592970341915 35.3906398473498, 136.592925198213 35.3906455466902, 136.591627664476 35.3908089875545, 136.59161710573 35.3900273568523, 136.591616914839 35.3888616397593, 136.593841233198 35.3888736660063, 136.593844066449 35.3891919733134, 136.59396128008 35.3905171835698, 136.593871223424 35.3905263315631, 136.592970341915 35.3906398473498)) ^^http://www.opengis.net/ont/geosparql#wktLiteral