メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.341539565408 43.0265425656499, 141.341221803367 43.0269379734604, 141.341061580956 43.0271290555707, 141.340973970884 43.0272259791571, 141.340868794365 43.0273635545223, 141.340849973699 43.0273852068534, 141.340523902725 43.0277585326512, 141.340378917896 43.0279431225878, 141.339830338793 43.0277329735046, 141.339782498086 43.0277138853056, 141.338548423102 43.0272380507022, 141.339038360529 43.026836776223, 141.339241528065 43.0266914725084, 141.339636966798 43.0263791150637, 141.339698166118 43.0263179223978, 141.340097089472 43.0260159295781, 141.341539565408 43.0265425656499)) ^^http://www.opengis.net/ont/geosparql#wktLiteral