メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.480455289341 43.8720623243741, 142.480918719939 43.872417241202, 142.480272440147 43.8728551145551, 142.480015492545 43.8730291989919, 142.479141956894 43.8735940899423, 142.479069278924 43.8736410772762, 142.478811093237 43.8738043759842, 142.478308190017 43.8741224525589, 142.477976385937 43.873864707539, 142.476682953215 43.8728540167162, 142.477050110868 43.8726077050211, 142.478293819285 43.8717982312258, 142.478670135893 43.8715423160293, 142.479273434298 43.8711571104453, 142.479929053541 43.8716592831738, 142.480455289341 43.8720623243741)) ^^http://www.opengis.net/ont/geosparql#wktLiteral