メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.046145261477 42.9098403510388, 143.046111498844 42.9100937846455, 143.046047895543 42.910571084192, 143.045273951851 42.9105166692472, 143.04464305927 42.9104741293488, 143.044558597133 42.9104685250775, 143.044631963602 42.9099870790879, 143.044643966903 42.9099085037694, 143.044706485428 42.9094988027737, 143.046178017456 42.9095941687789, 143.046145261477 42.9098403510388)) ^^http://www.opengis.net/ont/geosparql#wktLiteral