メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.32136590411 43.1405275982564, 141.322574746899 43.140374908734, 141.323238141754 43.1402947456874, 141.32351004004 43.1414709715103, 141.323874362547 43.1430149955194, 141.3232174693 43.1431014779014, 141.322580426953 43.1431834043325, 141.321081094714 43.1433742593548, 141.320968906374 43.1428927085192, 141.320871754431 43.1425029208869, 141.320782155192 43.1421345039406, 141.320696212264 43.1418164740321, 141.320610667958 43.1414151052536, 141.320521344496 43.1410350162201, 141.320421246915 43.1406498462173, 141.32136590411 43.1405275982564)) ^^http://www.opengis.net/ont/geosparql#wktLiteral