Input question: Which is the oldest Formula 1 racetrack that is still in use for grand prix racing?

Output answer: indianapolis usa

Input question: The city of Cork, Ireland, lies on which river?

Output answer: river lee

Input question: What word is given to the association of dissimilar organisms for mutual benefit?

Output answer: symbiosis

Input question: Which river forms the boundary between Burma and Thailand?

Output answer:
salween river