What chemical compound causes pain in muscles after exercise?

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In what year was Wikipedia officially launched?

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Which French salad containing tuna, anchovies, tomatoes, olives and hard boiled eggs?

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Which body part was Achilles weak spot?

The Latin name for copper comes from what island where the ore was mined?

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What movie starring Bruce Willis contains the line "I see dead people"?

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What fish became popular at fish stores after the release of "Finding Nemo"?

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What is the only African nation with Spanish as the official language?