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.

[EX Q]: Category: BRIT LIT 
Clue: His 1915 novel "The Rainbow" was declared obscene; so was his 1928 novel
[EX A]: d.h. lawrence

[EX Q]: Category: DIAMONDS ARE FOREVER 
Clue: Though guiltless, this French queen fell even more out of favor after the 1785 Affair of the Diamond Necklace
[EX A]: marie antoinette

[EX Q]: Category: THE PENDULUM 
Clue: Pendulums in these instruments remain still as the Earth moves, allowing those movements to be charted
[EX A]:
seismographs