メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.368940520664 43.8263116564493, 142.368447228584 43.8265005512478, 142.368594128041 43.8270004219817, 142.368156478939 43.8270501648646, 142.367543743442 43.8271035975322, 142.366744880018 43.8264811455592, 142.365558881746 43.8256002711765, 142.367799976032 43.8239871250497, 142.368397676986 43.8235568758959, 142.369702659944 43.8243442988699, 142.370822530449 43.8249734282924, 142.368940520664 43.8263116564493)) ^^http://www.opengis.net/ont/geosparql#wktLiteral