メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((131.415321622115 31.9004181290204, 131.415437480198 31.9013419733589, 131.415062994929 31.9017772888859, 131.415005883483 31.901824752499, 131.414346421876 31.9022858626042, 131.41396513953 31.9025613264615, 131.413925728223 31.902383331087, 131.413780629875 31.9016684900372, 131.413670642719 31.9011675213963, 131.41366916106 31.9005865132661, 131.413668260739 31.8996453104564, 131.413671068929 31.8992757380188, 131.414217535045 31.8992417767611, 131.414677383327 31.8992136593809, 131.415181668427 31.8991855374914, 131.415235124858 31.8997142350172, 131.415321622115 31.9004181290204)) ^^http://www.opengis.net/ont/geosparql#wktLiteral