Problem: Given the question: What tour did both Mary Pierce and Meredith McGrath play in?
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The answer is:
Women's Tennis Association tour

Problem: Given the question: What gun did the machine gun that the MG 3 is derived from replace?
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The answer is:
MG 34

Problem: Given the question: Will Finn and Peter Bogdanovich, have which nationality in common?
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The answer is:
American