メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.341451452228 43.745640145969, 142.341238847461 43.7460175053257, 142.34079271542 43.7467376589566, 142.339167049993 43.7462569458133, 142.339176573825 43.7462409063375, 142.339428778141 43.7458157884561, 142.339659261908 43.7454276071892, 142.340045836293 43.7447550596736, 142.340472398855 43.7448973632584, 142.34107977089 43.7450744150043, 142.341666551444 43.7452543104107, 142.341659579484 43.7452660247877, 142.341451452228 43.745640145969)) ^^http://www.opengis.net/ont/geosparql#wktLiteral