メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.876291250936 43.0079577753604, 142.875308931004 43.0088160931159, 142.873587549346 43.0077507625084, 142.873544308753 43.0077251164356, 142.873567196215 43.0076903200967, 142.874126810773 43.006840437959, 142.874562753414 43.0069365954375, 142.874724333215 43.0069473189019, 142.875375502201 43.0073306518034, 142.876095707291 43.0077785179837, 142.876328962264 43.0079249364593, 142.876291250936 43.0079577753604)) ^^http://www.opengis.net/ont/geosparql#wktLiteral