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: U.S. PRESIDENTS 
Clue: 1 of the 3 U.S. Presidents to run on a third-party ticket after having already served as president

Answer: teddy roosevelt, martin van buren & millard fillmore


Question: Category: STATE CAPITALS 
Clue: One of the two state capitals whose names end with the Greek word for "city"

Answer: annapolis or indianapolis


Question: Category: 18th CENTURY SCIENTISTS 
Clue: This N. European said his grave-stone should be inscribed Princeps botanicorum, "prince of botanists"

Answer:
carolus linnaeus