Phyllis Dalton, MBE, (born 1925) is a British costume designer known for her work on "Lawrence of Arabia", "Dr. Zhivago", "Oliver!", "The Princess Bride", "Henry V" and "Much Ado About Nothing". She has received two Academy Awards, a BAFTA and an Emmy for her designs. Using only the above description and what you know about the world, "Dalton is an American costume designer." is definitely correct, incorrect, or inconclusive? 