メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.631608151483 35.3545534596453, 136.631555205258 35.3559413951881, 136.631508121278 35.3568573137592, 136.630717335189 35.3568441608338, 136.630761054099 35.3559119602125, 136.630826588975 35.3545330953595, 136.630862758799 35.3534355081191, 136.630914012113 35.353419045734, 136.631267729676 35.3533135708122, 136.631437724092 35.3532460131306, 136.631656385331 35.3531368412398, 136.631619929171 35.35420787724, 136.631609532989 35.3545134657287, 136.631608151483 35.3545534596453)) ^^http://www.opengis.net/ont/geosparql#wktLiteral