メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.055933068334 34.8599494809706, 137.056270943948 34.8604335590733, 137.056034636496 34.860555960154, 137.055499856722 34.8608100704813, 137.055260503693 34.8604896137772, 137.054791147597 34.8598565269969, 137.055743076329 34.8591080427746, 137.055987536693 34.8594489966089, 137.055841102472 34.8595262644239, 137.055900129261 34.8596159029078, 137.055730011861 34.8597050503639, 137.055933068334 34.8599494809706)) ^^http://www.opengis.net/ont/geosparql#wktLiteral