メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.219911637225 39.6522330945534, 140.219127728402 39.6523376758312, 140.218881101806 39.6508693999854, 140.220280633637 39.6509876253928, 140.220779422122 39.6509849784655, 140.221011587225 39.6509967578622, 140.222024641336 39.651094945945, 140.221596562704 39.6511359701359, 140.221153138735 39.6512138563178, 140.221044600719 39.6512840067566, 140.221179856999 39.6514409054244, 140.220544648809 39.6515726329492, 140.219724388305 39.6517741024177, 140.219911637225 39.6522330945534)) ^^http://www.opengis.net/ont/geosparql#wktLiteral