メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.739156743969 35.1673157695739, 136.739107916904 35.1681722620462, 136.738417413773 35.1682096116584, 136.737997355152 35.1682323510401, 136.737394783273 35.1682649345858, 136.736402418792 35.1683134561594, 136.736065666618 35.1668429427579, 136.737021430671 35.1666243689528, 136.738386704495 35.1665277235136, 136.739207345507 35.1664721710673, 136.739156743969 35.1673157695739)) ^^http://www.opengis.net/ont/geosparql#wktLiteral