You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.
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Question: Category: YOU ARE SO FOXY! 
Clue: The foxglove plant is the main source of this medicine used as a stimulant  in damaged heart tissue

Answer: digitalis


Question: Category: POLAND 
Clue: After WWII, over 80% of the buildings in this capital were uninhabitable

Answer: warsaw


Question: Category: BEASTLY RHYME TIME 
Clue: The pile where the woolly farm animals are stacked

Answer:
sheep heap