メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.996847879997 34.9895011224898, 136.996732690086 34.9899263985235, 136.995728668594 34.9898758839727, 136.995654602483 34.9896345013377, 136.995692463991 34.989513001022, 136.995805743368 34.9892552648073, 136.996030675004 34.9886501392413, 136.99681672476 34.9889366190805, 136.997011686915 34.9890033065076, 136.996847879997 34.9895011224898)) ^^http://www.opengis.net/ont/geosparql#wktLiteral