メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.033236422602 43.5615484638133, 142.033201664515 43.5614185420787, 142.033373793896 43.560382906613, 142.036359876783 43.559162088232, 142.037032952287 43.5588878380911, 142.037207368361 43.5591074298102, 142.036832847233 43.5592459457821, 142.036235797621 43.55951977327, 142.03546891065 43.5599299586028, 142.035008673379 43.5602057232691, 142.034564466534 43.5605405526538, 142.033236422602 43.5615484638133)) ^^http://www.opengis.net/ont/geosparql#wktLiteral