メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.09533125355 36.6995403085246, 137.095344414053 36.7000390720954, 137.094296402517 36.6998027317117, 137.093445739759 36.6996268418238, 137.093255196721 36.6995828637689, 137.092948961949 36.6995169179662, 137.09283667082 36.6994976993198, 137.092527044136 36.6994180233769, 137.091635573172 36.6992037228714, 137.09194956925 36.6982666737921, 137.092092931447 36.6978172908626, 137.093052442016 36.698037120892, 137.094299889985 36.6983117492271, 137.095206185799 36.6985219542679, 137.095278524481 36.6985233341671, 137.09533125355 36.6995403085246)) ^^http://www.opengis.net/ont/geosparql#wktLiteral