メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.399087920431 37.4230006886841, 140.398126737608 37.4230507517849, 140.396786887205 37.4230605100709, 140.39673142583 37.4207893950931, 140.397221932022 37.420772841181, 140.397410121123 37.4216281477291, 140.399175114775 37.4213938926835, 140.399229390659 37.4226998280233, 140.399132626818 37.4227611154239, 140.399120290592 37.4228049631514, 140.399099967485 37.4229129129428, 140.399087920431 37.4230006886841)) ^^http://www.opengis.net/ont/geosparql#wktLiteral