メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.30310918757 43.0633172245956, 141.302709404727 43.0635351000585, 141.30176605863 43.0640511666682, 141.301705966577 43.0640790820166, 141.301086238048 43.0644084985141, 141.300812058318 43.0645542676141, 141.300305664887 43.0641464481439, 141.300171133815 43.0640380094887, 141.300442332866 43.0638865215492, 141.300733751534 43.0637236663047, 141.301014523734 43.0635731710143, 141.301558018173 43.0632730117645, 141.302008108343 43.0630273553258, 141.302533215839 43.0627434264678, 141.302845021527 43.0630623468198, 141.30310918757 43.0633172245956)) ^^http://www.opengis.net/ont/geosparql#wktLiteral