メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.087428056652 35.1353520852902, 136.087004048983 35.1351130922474, 136.086671373588 35.1349140331872, 136.086936163399 35.1346005124093, 136.08743566158 35.1339858856802, 136.088103607908 35.1343410390401, 136.0881973953 35.1343981541788, 136.087428056652 35.1353520852902)) ^^http://www.opengis.net/ont/geosparql#wktLiteral