メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.044693906493 37.9153753655905, 139.044196304087 37.9157316046147, 139.043814665217 37.9160300037959, 139.043458485103 37.9157312193597, 139.0431130808 37.9154536423661, 139.043035858149 37.9153916328047, 139.042863624668 37.9152531929288, 139.042857190529 37.9152480147838, 139.043240539125 37.9149708675947, 139.043426539243 37.9148066976275, 139.044191990695 37.9151458211808, 139.04464653849 37.9153555953305, 139.044693906493 37.9153753655905)) ^^http://www.opengis.net/ont/geosparql#wktLiteral