メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.04522959091 43.5600872712935, 142.045621797772 43.5602103291733, 142.046087533023 43.5603265177062, 142.047234556113 43.5604685983424, 142.047097635718 43.5616480345843, 142.047037313709 43.5620495453381, 142.046209074533 43.5619954394338, 142.045018848801 43.5619426694378, 142.043539127103 43.5618737242511, 142.042698375926 43.561832205802, 142.042784731293 43.5605912464339, 142.043047379231 43.5596712858577, 142.043867077784 43.5598081945833, 142.044716398364 43.5599262342681, 142.04522959091 43.5600872712935)) ^^http://www.opengis.net/ont/geosparql#wktLiteral