Problem: The extinct Moa was the largest ever what . to live on Earth?
Answer: bird

Problem: Who directed 'Alien 3' (1992), 'Fight Club' (1999) and 'The Social Network' (2010)?
Answer: david fincher

Problem: In which European capital city is the famous Hotel Kempinski
Answer: berlin

Problem: The Grand Canyon is in which US state?
Answer:
arizona