メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.86501443324 35.2351229159015, 136.864989520886 35.2355668811443, 136.864942481781 35.2359943821986, 136.863940016671 35.2358824319911, 136.863959498821 35.2357221947114, 136.863979158552 35.235514068177, 136.864015677739 35.2350779494203, 136.864022060202 35.2350640211113, 136.864071376984 35.2345967357004, 136.864104376946 35.2342637801248, 136.865088176292 35.2343346961521, 136.86501443324 35.2351229159015)) ^^http://www.opengis.net/ont/geosparql#wktLiteral