メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.993338292925 34.8953695784971, 136.993708333037 34.8957717607022, 136.99372178573 34.8958024159136, 136.992206723579 34.8966414404724, 136.992056963485 34.8967259507529, 136.992007252534 34.8967626425397, 136.991742631033 34.8964476563566, 136.991028893979 34.8955785930632, 136.992014524685 34.8953238697734, 136.992107244885 34.8952749852595, 136.992886515474 34.8948663533334, 136.993026418079 34.8950308643728, 136.993338292925 34.8953695784971)) ^^http://www.opengis.net/ont/geosparql#wktLiteral