メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.779653541334 34.6296044825226, 135.779897255026 34.6296121085151, 135.779836524399 34.6310828946382, 135.779828716627 34.6314358836911, 135.778568398256 34.6313937296249, 135.778582998484 34.6310834347204, 135.778691991957 34.6300368766413, 135.777370392267 34.6300092477347, 135.777376614513 34.6298558589659, 135.777753816274 34.6298517596382, 135.777773477784 34.629545981562, 135.779653541334 34.6296044825226)) ^^http://www.opengis.net/ont/geosparql#wktLiteral