メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.057770290336 40.2272873246117, 140.054165320001 40.2276069978799, 140.053992994432 40.2251247114362, 140.054432382554 40.2250964772564, 140.057467280563 40.2249273750495, 140.057770290336 40.2272873246117)) ^^http://www.opengis.net/ont/geosparql#wktLiteral