メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.597822058182 42.6324853227678, 141.597841279645 42.6324962637792, 141.598759328422 42.6330288690517, 141.598780202564 42.6330409447, 141.59993017737 42.6336852889353, 141.59955441399 42.6342821355928, 141.599090176824 42.6349721654282, 141.598764072433 42.6347863112213, 141.597651692334 42.6340985614208, 141.596715138783 42.6335361594615, 141.59656958584 42.6334465654567, 141.5957263708 42.6329508031304, 141.59629177863 42.6324146993719, 141.596830549457 42.6319204994194, 141.597822058182 42.6324853227678)) ^^http://www.opengis.net/ont/geosparql#wktLiteral