メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.044484497937 42.9029444492203, 143.04500934681 42.9029824483149, 143.04545055354 42.9030143444895, 143.045357293374 42.9036550230331, 143.04544198516 42.9036643528313, 143.045418731609 42.9038275457963, 143.04533307626 42.9038213879885, 143.045308905291 42.903987541948, 143.04485579068 42.9039525640337, 143.044717889104 42.9039419848283, 143.044352015759 42.9039137851015, 143.044006541173 42.9038870598335, 143.044144701523 42.9029198665284, 143.044484497937 42.9029444492203)) ^^http://www.opengis.net/ont/geosparql#wktLiteral