メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.831451902412 34.6773163298966, 135.831205238438 34.6773259902557, 135.831196915458 34.6774314852217, 135.831014412263 34.6774379945761, 135.831015403158 34.6773960185643, 135.830944192908 34.6773914125624, 135.830945567487 34.6771861784857, 135.83094666329 34.6770247514819, 135.831595842506 34.6770224088131, 135.831594834984 34.6771834113401, 135.831454702338 34.6771805426018, 135.831451902412 34.6773163298966)) ^^http://www.opengis.net/ont/geosparql#wktLiteral