メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((145.136358509428 43.6529037028817, 145.135989282947 43.652749371763, 145.135890977235 43.6527473205344, 145.135374238672 43.6525624008016, 145.135412520114 43.6525083771375, 145.136254985246 43.651357621419, 145.137143662821 43.6517213755799, 145.136393910322 43.6527774303534, 145.136358509428 43.6529037028817)) ^^http://www.opengis.net/ont/geosparql#wktLiteral