メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.34190900911 43.0272836196023, 141.341822230174 43.0278314383871, 141.341523677649 43.0278145801653, 141.34070367069 43.0277695964809, 141.340523902725 43.0277585326512, 141.340849973699 43.0273852068534, 141.340868794365 43.0273635545223, 141.340973970884 43.0272259791571, 141.341061580956 43.0271290555707, 141.341221803367 43.0269379734604, 141.341539565408 43.0265425656499, 141.342070477163 43.0258893988206, 141.342000039013 43.0265124621292, 141.34190900911 43.0272836196023)) ^^http://www.opengis.net/ont/geosparql#wktLiteral