メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.502487144157 35.6496400801615, 140.502340361736 35.6498655585703, 140.502171635622 35.6500768623925, 140.502034541529 35.6502066590941, 140.501771801783 35.6503536613509, 140.501679267926 35.6503895201891, 140.501460496691 35.6504650160226, 140.499493680263 35.6513201129103, 140.499136298806 35.6509191019846, 140.499332855501 35.6503724169226, 140.499465547256 35.6500329037315, 140.49956015053 35.6498398239969, 140.499745059315 35.649471504529, 140.499899456867 35.6491122607442, 140.502487144157 35.6496400801615)) ^^http://www.opengis.net/ont/geosparql#wktLiteral