メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.752206905866 40.8255669938364, 140.75228507617 40.8255719740508, 140.753188312261 40.8256411936467, 140.753707695189 40.8256701821512, 140.754637291274 40.8257308239743, 140.754606334016 40.8264512680496, 140.754537819624 40.827091690004, 140.754518431905 40.8275748259955, 140.754472559024 40.8281637598702, 140.753380934577 40.8280785212429, 140.753290776179 40.8280714928595, 140.751860611555 40.8279561072694, 140.751362239118 40.8279273357797, 140.750257280862 40.8278635173141, 140.750311006964 40.8270286888507, 140.750368564923 40.8261453160163, 140.750373188223 40.8254563049041, 140.751381825383 40.8255141451396, 140.752206905866 40.8255669938364)) ^^http://www.opengis.net/ont/geosparql#wktLiteral