メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.75063815763 35.4213308655057, 136.750555220451 35.4213236810161, 136.750538852136 35.4217723104201, 136.750420821225 35.4217557802718, 136.749646585123 35.421652077296, 136.749120536249 35.4215746415574, 136.749216588066 35.4211232930315, 136.749170413929 35.4211189441064, 136.7492070219 35.42098463704, 136.749284695984 35.420869342235, 136.749606647894 35.4204355989406, 136.749997676144 35.4206292219999, 136.750774922502 35.4209908145506, 136.75063815763 35.4213308655057)) ^^http://www.opengis.net/ont/geosparql#wktLiteral