メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.366127192708 34.8200193125157, 137.365700357151 34.8204701979617, 137.365031028228 34.8211717839198, 137.364168059811 34.8206298637416, 137.364867981844 34.8199352760897, 137.365292246991 34.8194890477577, 137.366135964906 34.81863505051, 137.367125486919 34.8189529200671, 137.366127192708 34.8200193125157)) ^^http://www.opengis.net/ont/geosparql#wktLiteral