メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.020761881884 34.8846440408062, 137.019770935661 34.8842171809542, 137.015928904587 34.882539596644, 137.014848979026 34.8820681426982, 137.015629777688 34.8809052541314, 137.015986395661 34.8802971797356, 137.01601372241 34.8803089050068, 137.01781729396 34.8810882364437, 137.020181081523 34.8821278140664, 137.021793402657 34.8828396620781, 137.022886538775 34.8833142482932, 137.023077846009 34.8833933564002, 137.022981814245 34.8835735418089, 137.022256693984 34.8837867844533, 137.022009849732 34.8841921640126, 137.021271996058 34.8838644983481, 137.020761881884 34.8846440408062)) ^^http://www.opengis.net/ont/geosparql#wktLiteral