メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.353373321969 44.4770581161156, 142.35252974919 44.476857643119, 142.352576734374 44.4767567360768, 142.352658680113 44.476591214183, 142.352713837308 44.476479821727, 142.352930736684 44.4760047273344, 142.353297536651 44.4753516030107, 142.354093854322 44.4755450127138, 142.353422819616 44.4769541824019, 142.353373321969 44.4770581161156)) ^^http://www.opengis.net/ont/geosparql#wktLiteral