メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.884910610937 37.4369193791673, 138.884022026511 37.4377143860245, 138.883596667923 37.4374003926379, 138.882972990592 37.4369744071827, 138.883536329411 37.436645932165, 138.884071528206 37.4363400731983, 138.884859941038 37.4358306420995, 138.885208010566 37.4358254221536, 138.885636409219 37.4357492610614, 138.88580688799 37.4359401841567, 138.885920925349 37.4361425552421, 138.884910610937 37.4369193791673)) ^^http://www.opengis.net/ont/geosparql#wktLiteral