This task is about creating an unanswerable question based on a given passage. Construct a question that looks relevant to the given context but is unanswerable. Following are a few suggestions about how to create unanswerable questions:
(i) create questions which require satisfying a constraint that is not mentioned in the passage
(ii) create questions which require information beyond what is provided in the passage in order to answer
(iii) replace an existing entity, number, date mentioned in the passage with other entity, number, date and use it in the question
(iv) create a question which is answerable from the passage and then replace one or two words by their antonyms or insert/remove negation words to make it unanswerable.
Q: Passage: During the war years Universal did have a co-production arrangement with producer Walter Wanger and his partner, director Fritz Lang, lending the studio some amount of prestige productions. Universal's core audience base was still found in the neighborhood movie theaters, and the studio continued to please the public with low- to medium-budget films. Basil Rathbone and Nigel Bruce in new Sherlock Holmes mysteries (194246), teenage musicals with Gloria Jean, Donald O'Connor, and Peggy Ryan (194243), and screen adaptations of radio's Inner Sanctum Mysteries with Lon Chaney, Jr. (194345). Alfred Hitchcock was also borrowed for two films from Selznick International Pictures: Saboteur (1942) and Shadow of a Doubt (1943).
A:
Who partnered with Walter Lang and Fritz Wanger during the war years?