メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.862226530522 37.4995785968765, 139.861054327579 37.4993942959657, 139.861413409265 37.4980277808894, 139.862418124591 37.4943223374028, 139.862804750762 37.4928124714937, 139.861528937232 37.4926173552707, 139.858106011774 37.4920450779382, 139.85839948645 37.4908631605828, 139.858948478453 37.488805143909, 139.859483626949 37.4867636022667, 139.860226952378 37.4839729574823, 139.864931614261 37.4847474615848, 139.864938618225 37.4847101485038, 139.866127223417 37.4848941305297, 139.865671644955 37.486602414899, 139.86503312855 37.4890404942406, 139.864339328858 37.4916716188282, 139.863907844403 37.4933218765877, 139.863213941812 37.4958924431847, 139.862492419162 37.4986667352336, 139.862226530522 37.4995785968765)) ^^http://www.opengis.net/ont/geosparql#wktLiteral