Given a statement, generate a question such that the answer is contained in that statement.
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Question: Vinegar changes the color of litmus paper from blue to red

Answer: What color does Vinegar change the color of litmus paper from blue to?


Question: a transmitter can be used to exchange information

Answer: What can be used to exchange information?


Question: Embryo implantation is used in reproduction.

Answer:
Embryo implantation is used in what?