メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.864063952562 35.2549775564578, 136.864054778872 35.2562456533425, 136.862953901026 35.2562214059691, 136.860882032673 35.2562275070173, 136.86081572052 35.2562305776319, 136.860806350283 35.2555799093243, 136.861652742084 35.2555828983734, 136.862796422192 35.2555976880887, 136.862804314461 35.2550493186223, 136.863262982706 35.2550316702389, 136.863508063471 35.2550221458325, 136.864063952562 35.2549775564578)) ^^http://www.opengis.net/ont/geosparql#wktLiteral