メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.353622680459 43.7451091091114, 142.354218533784 43.7452847686045, 142.354907355637 43.7454769710285, 142.354441368108 43.7463009359518, 142.35397749863 43.7471437796053, 142.353289851461 43.7469471061246, 142.352685283361 43.7467804510163, 142.350625273548 43.7461337989417, 142.351013676883 43.7452641917896, 142.351325227054 43.7444467418515, 142.353622680459 43.7451091091114)) ^^http://www.opengis.net/ont/geosparql#wktLiteral