メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.109247950931 35.0069682827487, 135.110535563629 35.0071523708999, 135.110307303593 35.0082681909131, 135.110082739038 35.0081817361128, 135.109730178036 35.0079833485947, 135.109168770544 35.0076022047053, 135.109217165334 35.0072432830871, 135.109239103423 35.0070920077447, 135.109247950931 35.0069682827487)) ^^http://www.opengis.net/ont/geosparql#wktLiteral