メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.90778516814 35.2862316008237, 136.906680360581 35.2866969058945, 136.906034322821 35.2869857972065, 136.906029743471 35.2868405730225, 136.906102602454 35.285648940848, 136.906415935133 35.2826240541654, 136.906436541882 35.2820428169291, 136.907874628108 35.2817867627977, 136.910083484802 35.2852447399111, 136.90778516814 35.2862316008237)) ^^http://www.opengis.net/ont/geosparql#wktLiteral