CREATE TABLE table_203_287 (id DECIMAL, "rank" DECIMAL, "area" TEXT, "date" TEXT, "presenter" TEXT, "seven wonders covered" TEXT)

which area has the river severn and the exmoor as two of the seven wonders ?
SELECT "area" FROM table_203_287 WHERE "seven wonders covered" = 'river severn'
SELECT "area" FROM "table_203_287" WHERE "seven wonders covered" = 'river severn'