メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.975269061535 34.6823222508565, 137.97514064523 34.6823718444204, 137.975026886656 34.6824158665446, 137.974276826015 34.6827236541381, 137.97217053535 34.6821518392052, 137.972016512132 34.6815091425626, 137.974938046722 34.6810816995609, 137.97512400838 34.6819152521039, 137.975468582868 34.6818613757666, 137.975427264812 34.6816539958018, 137.975577279354 34.6816333703769, 137.975658365893 34.6819902306336, 137.97535119308 34.6820483528727, 137.975369704324 34.6821140727224, 137.975222890402 34.6821475290562, 137.975269061535 34.6823222508565)) ^^http://www.opengis.net/ont/geosparql#wktLiteral