メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.390279664655 43.0866950988317, 141.390581996003 43.0870870556641, 141.390879053656 43.0874585060396, 141.389910017393 43.0878492004326, 141.389144582403 43.0881577302744, 141.388400090601 43.0884434170791, 141.38756488473 43.0876381303147, 141.387320178876 43.0873666488363, 141.38813961119 43.087046089669, 141.389974642965 43.0862969327941, 141.390279664655 43.0866950988317)) ^^http://www.opengis.net/ont/geosparql#wktLiteral