メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.451808872331 43.0387313529195, 141.452453092248 43.0400006650382, 141.452598314343 43.0402813106631, 141.45271318755 43.0404400730094, 141.452770454955 43.04052325062, 141.452829982831 43.0406096793802, 141.448351653492 43.0414831733777, 141.44763958767 43.0408271423851, 141.446991519742 43.0402754338079, 141.446292963082 43.0396993864608, 141.445607069888 43.0391274277269, 141.445491718161 43.0390179573178, 141.444797408419 43.0384199124209, 141.447564502076 43.0379097370469, 141.451123525428 43.0372899352701, 141.451808872331 43.0387313529195)) ^^http://www.opengis.net/ont/geosparql#wktLiteral