Question: When did the 50 cent coin come out?
qaPairs: question: When did the US 50 cent coin come out?
answer: December 1, 1794
question: When did the US Kennedy 50 cent coin come out?
answer: March 24, 1964
question: When did the Canadian 50 cent coin come out?
answer: January 2, 1908
question: When did the British 50 cent coin come out?
answer: 1969
question: When did the 12-sided Australian 50 cent coin come out?
answer: 1969
question: When did the round Australian 50 cent coin come out?
answer: 1966
question: When did the New Zealand 50 cent coin come out?
answer: 10 July 1967