メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.214624264589 35.3272693293949, 135.21432098113 35.327268286417, 135.214326613986 35.3271403288141, 135.214290678997 35.3269886661573, 135.214547811955 35.3269499680279, 135.214624264589 35.3272693293949)) ^^http://www.opengis.net/ont/geosparql#wktLiteral