メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.748806469701 35.0869809759791, 136.746422547795 35.0866397236031, 136.744916375927 35.0864151928934, 136.744827911394 35.0863321352329, 136.74526480894 35.086058706701, 136.745806292216 35.0856056283216, 136.746690624812 35.0850137260429, 136.747140180926 35.0848680875891, 136.747525933887 35.0847428578155, 136.748667571936 35.0845228926437, 136.748763918919 35.0845050532026, 136.748832023055 35.0845150053196, 136.748929567718 35.0845567500042, 136.749295947143 35.0847452697251, 136.748806469701 35.0869809759791)) ^^http://www.opengis.net/ont/geosparql#wktLiteral