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: THE TITLE ESCAPES ME 
Clue: 3 chimpanzees travel through time to 20th century Earth in the 1971 sequel "Escape From" this place
[A]: the planet of the apes


[Q]: Category: CLASSICAL MUSIC 
Clue: Mendelssohn's "Songs without Words" were once the most popular pieces for this instrument
[A]: piano


[Q]: Category: GEOLOGY 
Clue: This molten volcanic rock was given its name by those who lived around Mount Vesuvius
[A]:
lava