メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.891154104931 35.4565389353968, 136.891262779212 35.4567023201708, 136.890489452183 35.4570650205746, 136.890354290457 35.4568885459235, 136.890295853384 35.4567595377092, 136.890224367243 35.4565693355458, 136.890613497761 35.4564474473226, 136.891005827965 35.4563211997403, 136.891154104931 35.4565389353968)) ^^http://www.opengis.net/ont/geosparql#wktLiteral