メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.071920068578 35.2406109539217, 137.070979860322 35.2406102077471, 137.070563499972 35.2406117769968, 137.069744533314 35.2406073854514, 137.069740502748 35.2391893901216, 137.070556032253 35.2391834969705, 137.07096323719 35.2391781883926, 137.071945760002 35.2391724180057, 137.071945692568 35.2392305881798, 137.071920068578 35.2406109539217)) ^^http://www.opengis.net/ont/geosparql#wktLiteral