メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.365794761874 43.0980409972057, 141.365716358469 43.0983535552477, 141.365630508536 43.0986967176157, 141.365533551082 43.0990912735339, 141.365049246346 43.099026558658, 141.364707945238 43.0989815845042, 141.364386254132 43.0989410502914, 141.36400337881 43.0988906889272, 141.364102429385 43.0985113401769, 141.364174298196 43.0981732748961, 141.364259985059 43.0978419967453, 141.364790435413 43.09790714195, 141.36522748412 43.09796720333, 141.365794761874 43.0980409972057)) ^^http://www.opengis.net/ont/geosparql#wktLiteral