メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.773894672231 35.4453781536939, 136.7739165221 35.4455749089909, 136.772068026935 35.4458080563833, 136.770441322767 35.4460158204815, 136.770424391722 35.4458091511494, 136.770397961637 35.4455828755945, 136.770393048807 35.4455493742424, 136.771980372268 35.4453506370705, 136.771976222543 35.4453281242214, 136.772500552273 35.4453446882178, 136.773876283528 35.4452129237684, 136.773894672231 35.4453781536939)) ^^http://www.opengis.net/ont/geosparql#wktLiteral