メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.329244689122 43.7824141796612, 142.326344872247 43.7804142327512, 142.326949606179 43.7796548277638, 142.327269453971 43.7793110717462, 142.332225239125 43.7828348696233, 142.33234133774 43.7827342607468, 142.333917884145 43.7839447940677, 142.333211425071 43.7844511738785, 142.332698571012 43.7848489868172, 142.331180686925 43.7837492887179, 142.329986108075 43.7829254895652, 142.330481683823 43.7825436302778, 142.329724251373 43.7820529618588, 142.329244689122 43.7824141796612)) ^^http://www.opengis.net/ont/geosparql#wktLiteral