メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.907578841552 43.8083638098945, 143.908179019639 43.8080585586449, 143.909557122135 43.8095182941318, 143.908973881229 43.8098182622571, 143.908525829427 43.8100487936351, 143.907759651907 43.8104476260635, 143.90771081052 43.8104722613727, 143.907566202468 43.8105452599694, 143.906386154607 43.811133643871, 143.905872952588 43.8106103842961, 143.904977992755 43.8096881044272, 143.905658958292 43.8093398557662, 143.906290130227 43.8090171282101, 143.906724301247 43.8087970046888, 143.907578841552 43.8083638098945)) ^^http://www.opengis.net/ont/geosparql#wktLiteral