メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.743245057071 35.4123075006259, 136.743056360882 35.4126811610556, 136.741814447066 35.412236357776, 136.741982416849 35.4118875193196, 136.743245057071 35.4123075006259)) ^^http://www.opengis.net/ont/geosparql#wktLiteral