メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.05064821592 42.9159899178717, 143.051420193024 42.9160387474667, 143.051285746614 42.9171680275208, 143.051283733229 42.9171826004724, 143.050493706371 42.9171300966231, 143.049752428854 42.9170809760108, 143.049908986673 42.915942612707, 143.05064821592 42.9159899178717)) ^^http://www.opengis.net/ont/geosparql#wktLiteral