メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.624335565995 34.8857880593897, 136.624044414202 34.8860242884703, 136.623852150299 34.8860748533124, 136.623775914207 34.8860752429359, 136.623287910175 34.8860165327127, 136.621772753145 34.8863888722151, 136.621461411514 34.8854708657854, 136.621129816303 34.8845862032221, 136.62253047182 34.8842600946718, 136.622645757374 34.8845240387, 136.623792198792 34.8842566820107, 136.623948133094 34.8847069833246, 136.624335565995 34.8857880593897)) ^^http://www.opengis.net/ont/geosparql#wktLiteral