メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.207739475672 34.6989117038161, 135.207131198088 34.6986749298701, 135.2065996075 34.6984646465615, 135.206837899272 34.6980302268638, 135.207017393458 34.6977134210196, 135.207132658093 34.6975165219657, 135.207806696629 34.6977798678303, 135.208330076431 34.6979879513094, 135.207739475672 34.6989117038161)) ^^http://www.opengis.net/ont/geosparql#wktLiteral