メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.781491090416 37.9727879800399, 140.781350071719 37.9731769004396, 140.781248613065 37.9734672909372, 140.780180085451 37.9731977819577, 140.779293778374 37.9729583340121, 140.778599493451 37.972785135533, 140.778681056471 37.9725997628185, 140.779106009806 37.9721562109483, 140.779668206978 37.9715903784124, 140.78050416737 37.9718206506882, 140.78174560942 37.9721281011048, 140.781491090416 37.9727879800399)) ^^http://www.opengis.net/ont/geosparql#wktLiteral