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: THE 20th CENTURY 
Clue: In 1916, his assassins included a prince and a grand duke

Answer: rasputin


Question: Category: ACTORS 
Clue: While pregnant with him, the mother of this actor, gazing at the Uffizi's art, 1st felt him move, hence his 1st name

Answer: leonardo dicaprio


Question: Category: SCIENCE 
Clue: As it has no mass, this particle travels at about 186,000 miles per second

Answer:
photon


