question: What is the answer: What serial killer killed prostitutes in Whitechapel, London?
answer: jack ripper

question: What is the answer: How many compartments does a cow's stomach have?
answer: four

question: What is the answer: Based on an idea by Steven Spielberg and created by Diablo Cody, which American TV comedy-drama series, first broadcast in 2009, stars Toni Collete as a suburban housewife and mother coping with dissociative identity disorder?
answer: united states of tara

question: What is the answer: What nationality is the US Open 2013 winner Martin Kaymer?
answer:
german