メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.654325553894 36.2350835610443, 139.654117305428 36.2350726735263, 139.653544463917 36.2350375856951, 139.653579702287 36.2347113593271, 139.654250794757 36.2347183046693, 139.654322763073 36.2349749440437, 139.654325553894 36.2350835610443)) ^^http://www.opengis.net/ont/geosparql#wktLiteral