メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.610283754741 35.4296261298162, 139.610880117905 35.4300693221126, 139.610590287593 35.4303382178748, 139.610261263931 35.4306545741264, 139.609540986109 35.4301377376904, 139.608892160407 35.4296742958222, 139.609217870851 35.4294054405002, 139.609805225975 35.4292861764727, 139.610283754741 35.4296261298162)) ^^http://www.opengis.net/ont/geosparql#wktLiteral