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

Answer: red


Question: statement: plants start food chains, question: Plants start what?

Answer: food chains


Question: statement: local anesthetics block electrical signals, question: What block electrical signals?

Answer:
local anesthetics