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.

Q: Category: 2-LETTER WORDS 
Clue: It's used to attract attention to something sighted on a ship, like land or a sail

A: ho
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Q: Category: 3-D 
Clue: It's the next federal holiday after Memorial Day

A: independence day
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Q: Category: SCIENCE 
Clue: It's an insoluble solid that separates from a solution

A:
chemical precipitation
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