メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.875908463847 43.3242612128558, 141.877511732774 43.3240525509991, 141.877595033845 43.3240411461682, 141.877934363319 43.3251923876888, 141.878223475162 43.326114336914, 141.877823679545 43.3261581935828, 141.87748129893 43.3261980156847, 141.877122107774 43.3262337025377, 141.876774642566 43.326191643951, 141.876382412607 43.3261289737763, 141.876197305943 43.3261324517192, 141.874814228365 43.3263484941129, 141.874739373383 43.326107306046, 141.874580182623 43.3256355202192, 141.874510362703 43.3254294425871, 141.87442888812 43.3251608055297, 141.874092067847 43.3241050684225, 141.875788949247 43.3238260578293, 141.875908463847 43.3242612128558)) ^^http://www.opengis.net/ont/geosparql#wktLiteral