question: What is the answer: A study published in 2012 (by the UK National Institute for Health and Clinical Excellence) found that prolonged use of what tended to produce chronic ongoing tension headaches in sufferers?
answer: painkillers

question: What is the answer: In which American state is Fort Meade, the HQ of the National Security Agency?
answer: maryland

question: What is the answer: The football club BATE Borisov made their debut in the European Champions League this season, in which country do they play?
answer: belarus

question: What is the answer: "The US state of Kentucky is known ""the (what) Grass State""?"
answer:
blue