メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.844565178546 35.3233231356125, 136.843553811452 35.3224419349477, 136.843555483797 35.3223609501652, 136.843991845846 35.3223674755577, 136.843988964397 35.3225427569861, 136.844372985325 35.3225420269396, 136.844352818948 35.3229559322748, 136.844579730429 35.3229547805131, 136.844565178546 35.3233231356125)) ^^http://www.opengis.net/ont/geosparql#wktLiteral