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 consistency, answers should be in all lower cased letters.
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Question: Category: LARGE EQUIPMENT 
Clue: For smooth travel, ballast tampers & ballast regulators keep the gravel at the right level among these

Answer: railroad tracks


Question: Category: "TA" TA FOR NOW 
Clue: In English the name of the main text of this religion means "The Classic of the Way and its Power"

Answer: taoism


Question: Category: SCARFACE 
Clue: This event orchestrated by Capone took place at a garage at 2122 N. Clark St.

Answer:
the st. valentine\'s day massacre