メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.772740138579 35.6873208371811, 139.773417990759 35.6875448320733, 139.774055071542 35.6877610212744, 139.773887735948 35.6881504641907, 139.773771111562 35.688430358958, 139.773595877499 35.6888299370597, 139.772968832183 35.6886240668914, 139.772929666475 35.6886191535418, 139.772304249036 35.6884161686425, 139.772223325039 35.6883863387538, 139.771631273866 35.6882008660679, 139.771913756369 35.687516111189, 139.772068759971 35.687108426118, 139.772740138579 35.6873208371811)) ^^http://www.opengis.net/ont/geosparql#wktLiteral