メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.336682442326 43.1116071989817, 141.336772928952 43.1117063091901, 141.337286249457 43.1123356820782, 141.336228855619 43.1128839951194, 141.33584394714 43.1130942822173, 141.335364089607 43.1133564835683, 141.33513140995 43.1130595312343, 141.334895530611 43.1127582612274, 141.334856117002 43.1127078864846, 141.333960334486 43.1115629473273, 141.334603647904 43.11120501462, 141.335119243425 43.1109272118135, 141.335771216913 43.1105735591858, 141.336240642093 43.1111134901582, 141.336423828202 43.1113241058664, 141.336682442326 43.1116071989817)) ^^http://www.opengis.net/ont/geosparql#wktLiteral