メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.844361986838 35.4392638737014, 136.843684902882 35.4420479242338, 136.843748787558 35.4423196346823, 136.843655836709 35.442641275539, 136.843363459915 35.4434742329578, 136.843263427286 35.4438445512412, 136.842274350443 35.4437280690164, 136.841444647729 35.4436590115895, 136.842304937011 35.4401186313739, 136.842570650945 35.4389599821591, 136.843612936719 35.4391459997457, 136.844361986838 35.4392638737014)) ^^http://www.opengis.net/ont/geosparql#wktLiteral