メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.197600795558 34.6924957695462, 135.196570242968 34.6920523486104, 135.19699151245 34.6913687434014, 135.197997480674 34.6918100828422, 135.197600795558 34.6924957695462)) ^^http://www.opengis.net/ont/geosparql#wktLiteral