メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.878492556926 37.0805698327907, 140.879157467104 37.0805540337202, 140.879331934781 37.0812244568409, 140.879518184577 37.0816903356459, 140.879609524595 37.081956484263, 140.878992954131 37.0821601774678, 140.8790033351 37.0821162266338, 140.878466550436 37.0819868553354, 140.877894741279 37.0818727870764, 140.877933902414 37.0814089992785, 140.877920067681 37.08100193035, 140.877910184334 37.0805816594183, 140.878492556926 37.0805698327907)) ^^http://www.opengis.net/ont/geosparql#wktLiteral