メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.634296087394 35.3595120980232, 136.633044770953 35.3594210843963, 136.633046236619 35.3594073579049, 136.633072673861 35.3591583901357, 136.633094949535 35.3589017275643, 136.634334996264 35.3589733257783, 136.634296087394 35.3595120980232)) ^^http://www.opengis.net/ont/geosparql#wktLiteral