メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.259858064321 39.6599897247593, 140.25949295986 39.6597848454679, 140.260356770519 39.6587532018149, 140.26039361695 39.6587682751906, 140.260679924587 39.6590263219313, 140.260879624892 39.6591434855719, 140.261264173461 39.659268875699, 140.261300730072 39.659287945923, 140.259858064321 39.6599897247593)) ^^http://www.opengis.net/ont/geosparql#wktLiteral