メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.860267803784 37.4632647915715, 138.860391889213 37.4635955691366, 138.860685369982 37.4642717677161, 138.86093882542 37.464928941031, 138.860488879139 37.4650431129775, 138.860473443736 37.465047103977, 138.859162973231 37.4649449809292, 138.859067152683 37.4649494960409, 138.858763578188 37.4649419750702, 138.858577129644 37.4649297295975, 138.858481144327 37.4649046791081, 138.858464853728 37.4648367233001, 138.858367542335 37.4645357081389, 138.85806570421 37.4637809569891, 138.857626232353 37.462638301427, 138.8575993632 37.4625874124988, 138.858200394323 37.4624412636919, 138.858774816154 37.4622994154455, 138.859455612354 37.4621317499398, 138.85969467966 37.4620164006874, 138.860267803784 37.4632647915715)) ^^http://www.opengis.net/ont/geosparql#wktLiteral