メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.146543754363 34.6632407715031, 135.146135988924 34.6636604316496, 135.14520513364 34.6630265905412, 135.145475679689 34.662730394198, 135.145499296297 34.6627046011038, 135.145577664635 34.6626297056982, 135.146543754363 34.6632407715031)) ^^http://www.opengis.net/ont/geosparql#wktLiteral