メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.246384019477 35.8733296139767, 140.241933642821 35.8725608060435, 140.241909462217 35.8725608619536, 140.242284969122 35.870418184877, 140.242740038291 35.8678213523154, 140.24310536175 35.8658099370106, 140.243216324339 35.8651600776891, 140.245417795026 35.8653812443598, 140.245655611029 35.8654078822821, 140.246581897244 35.8655116101955, 140.246523992276 35.8683456341155, 140.246442634852 35.8711702064858, 140.246399155593 35.8732458663252, 140.246384019477 35.8733296139767)) ^^http://www.opengis.net/ont/geosparql#wktLiteral