メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.692726949462 35.4312110629265, 136.693237763936 35.4312245754804, 136.693236171155 35.4313718525115, 136.693227567668 35.4329971047515, 136.692725523117 35.4329899973236, 136.692720067134 35.4333119700354, 136.692253113842 35.4332924995685, 136.692256724757 35.4326764827744, 136.690053211456 35.4321290075689, 136.689893372127 35.432118060752, 136.690245916542 35.4311897722004, 136.690311823085 35.4311893628166, 136.690903816351 35.4312024304219, 136.692726949462 35.4312110629265)) ^^http://www.opengis.net/ont/geosparql#wktLiteral