Question: Who is known as an American film director, Irvin Willat or Ted Kotcheff? 
Sentence (from "Ted Kotcheff"): William Theodore "Ted" Kotcheff (born April 7, 1931; as Velichko Todorov Tsochev) is a Bulgarian-Canadian film and television director and producer, known primarily for his work on several high-profile British and American television productions such as "Armchair Theatre" and "".
Relevant evidence: Yes