メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.664221353961 43.9335754290659, 141.663270590129 43.9342527981786, 141.663164482964 43.934311574728, 141.662132709161 43.9346412487337, 141.662195736359 43.9347871749609, 141.66158812223 43.9348641931911, 141.660202182937 43.9350164530449, 141.659820976674 43.9350514509516, 141.66103213791 43.9341917201736, 141.662042657275 43.9334960567613, 141.662159704999 43.9334180282203, 141.662635252987 43.9330701876814, 141.663147940499 43.9326951308387, 141.664263329185 43.933482415126, 141.664221353961 43.9335754290659)) ^^http://www.opengis.net/ont/geosparql#wktLiteral