Q: What is the major ingredient in the curry dish 'Dopiaza'?
A: onion

Q: What was the name of The Cisco Kid's horse?
A: diablo

Q: The wife of Humphrey Verdon Roe, with whom she founded a ground-breaking clinic in Britain, was also an author, palaeobotanist and campaigner for women's rights. What was the field in which she is known for pioneering effective, widespread and consistent action?
A:
birth control