メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.086000835696 35.1399886691836, 136.085144763021 35.139562089539, 136.08587671617 35.1387063660968, 136.086692439438 35.1391315619582, 136.086000835696 35.1399886691836)) ^^http://www.opengis.net/ont/geosparql#wktLiteral