メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.266624892449 38.3699649324857, 140.26661666987 38.3707211026257, 140.266613654052 38.3717036538947, 140.265345706993 38.3714471044473, 140.265382713591 38.370104350103, 140.265383718729 38.3677105786297, 140.265388014009 38.3671608963241, 140.265899804806 38.3672747159091, 140.266350011595 38.3673464272702, 140.266667781453 38.3674626863443, 140.266634232449 38.3684690241209, 140.266624892449 38.3699649324857)) ^^http://www.opengis.net/ont/geosparql#wktLiteral