メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.017838309146 37.7622204470693, 139.01781729239 37.7622643228939, 139.017773855705 37.7625641043639, 139.017729658444 37.7627553427221, 139.016883955134 37.7627435676803, 139.01680923419 37.7622894422411, 139.016829113263 37.7618788250608, 139.016823716554 37.7617593233692, 139.016811185868 37.7614816114902, 139.017808339131 37.761445837269, 139.017838309146 37.7622204470693)) ^^http://www.opengis.net/ont/geosparql#wktLiteral