メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.859123039431 43.3277645036942, 141.859295216003 43.3283999422464, 141.859399884849 43.3287740919565, 141.858529633432 43.3289088984343, 141.858279079256 43.328095120969, 141.858222684315 43.3278966739675, 141.858141252751 43.3276291493013, 141.858047010337 43.3272909711238, 141.858947922478 43.3271521935691, 141.859005537163 43.327364218516, 141.859123039431 43.3277645036942)) ^^http://www.opengis.net/ont/geosparql#wktLiteral