メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.745310117196 35.4149970796257, 136.745279624006 35.4152283070188, 136.743530844107 35.4146325631959, 136.74364579364 35.4144129362632, 136.743750573233 35.4142053503834, 136.744757046402 35.4145514645063, 136.74533985744 35.4147528587983, 136.745310117196 35.4149970796257)) ^^http://www.opengis.net/ont/geosparql#wktLiteral