メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.769871235868 35.435318912312, 136.769478968116 35.4353272128953, 136.768882071334 35.4352869599095, 136.76885508012 35.4348176677576, 136.768795123474 35.4339221583735, 136.769257801146 35.4338805696871, 136.769532960703 35.4338718883698, 136.769555705841 35.4340060059959, 136.769637705933 35.4339967309031, 136.769693954522 35.4344661192844, 136.769764647165 35.4344643418969, 136.769871235868 35.435318912312)) ^^http://www.opengis.net/ont/geosparql#wktLiteral