メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.741930770253 35.410326812495, 136.741681011741 35.4102391063881, 136.741586390666 35.4104124314335, 136.741391069239 35.4103430852897, 136.741537158682 35.4100656472781, 136.741539374704 35.4100615005757, 136.74183044723 35.4101601272466, 136.741996264107 35.4102131026627, 136.741930770253 35.410326812495)) ^^http://www.opengis.net/ont/geosparql#wktLiteral