メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.524328051798 36.3101264655269, 136.507351323891 36.3120364842329, 136.50212371031 36.3007978333609, 136.51502998953 36.3006748979708, 136.522461348039 36.3005258037844, 136.524328051798 36.3101264655269)) ^^http://www.opengis.net/ont/geosparql#wktLiteral