メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.018094452454 37.7788090130508, 139.015461933195 37.7789283777897, 139.015150760953 37.778377576287, 139.014791197203 37.7777412460775, 139.014640778527 37.7774399186747, 139.017961272169 37.7772719408152, 139.018040890636 37.7783150922443, 139.018094452454 37.7788090130508)) ^^http://www.opengis.net/ont/geosparql#wktLiteral