who were the hosts of the tonight show???

Answer: Jack Paar
Question: what is used to measure the speed of a stream?

Answer: pitot tube
Answer this question: first earth summit 1992 was held at which country??

Rio de Janeiro
Q: where does most of earths oxygen come from today?A: photosynthetic organisms
Input: who has taken hat-trick in both innings of a test match?

Output: Jimmy Matthews
Input: who wrote the journey to the center of the earth?

Output:
Jules Verne