メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.215706730749 34.8030039983234, 138.215796848418 34.8030125167267, 138.216334408517 34.8030172807601, 138.217223208039 34.8029958052917, 138.218236707592 34.8029898219803, 138.21811868309 34.8030777292674, 138.217976875715 34.803134592087, 138.21725213373 34.8033925289101, 138.216896011414 34.8035291860567, 138.216681649517 34.8036351803688, 138.216536426838 34.8037672515595, 138.216353185213 34.803974593812, 138.21617869132 34.8042837952567, 138.215820463278 34.8049185163126, 138.215450762858 34.8055736337367, 138.214266629531 34.8051225375622, 138.213126255405 34.8046881519399, 138.213331217254 34.8043312751894, 138.21350103281 34.8040322087566, 138.213508118435 34.804020111085, 138.213874868956 34.8034002065193, 138.214044921589 34.8030939542198, 138.214249884012 34.802673122895, 138.214433234726 34.8027091869573, 138.215223787238 34.8029213229111, 138.215541796246 34.8029884039654, 138.215706730749 34.8030039983234)) ^^http://www.opengis.net/ont/geosparql#wktLiteral