メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.147250851519 35.0908452645667, 137.147835683489 35.0908723469208, 137.147826292343 35.0909722812364, 137.147907677539 35.0910592015749, 137.147881416186 35.091305339061, 137.14739390096 35.091290599956, 137.147360247838 35.0911829816706, 137.147250851519 35.0908452645667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral