メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.924868616313 35.1335796401516, 136.924863029584 35.1339906314008, 136.924533799093 35.134060107989, 136.924389522499 35.1338562849069, 136.924351542477 35.1338498697246, 136.924160787734 35.133903991746, 136.924124818026 35.1338701847416, 136.924053523178 35.1335705200554, 136.924028638241 35.1335353978152, 136.923966877665 35.1333673076526, 136.923967340221 35.1329803206336, 136.924877542554 35.1329743507396, 136.924868616313 35.1335796401516)) ^^http://www.opengis.net/ont/geosparql#wktLiteral