メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.359752623087 43.0703829486197, 141.359780728916 43.0702637468069, 141.359791462938 43.07021804603, 141.360781136341 43.0703327798122, 141.360760723897 43.070477289146, 141.36135365655 43.0705574986181, 141.36134357667 43.0705978599989, 141.361094763057 43.0716643051805, 141.361068102116 43.0717566514457, 141.359510003095 43.0715365064165, 141.359614351438 43.0710148398659, 141.359737937527 43.0704696209493, 141.359752623087 43.0703829486197)) ^^http://www.opengis.net/ont/geosparql#wktLiteral