メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.745213024346 35.2998320784216, 136.745211634235 35.2998434113305, 136.744857635717 35.2998210605604, 136.744790139498 35.3003065227928, 136.744531588709 35.300272741159, 136.744371385048 35.3002483118781, 136.744549077471 35.299889708587, 136.744626670419 35.2997684307408, 136.745213024346 35.2998320784216)) ^^http://www.opengis.net/ont/geosparql#wktLiteral