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: TOUGH HODGEPODGE 
Clue: This Italian outlived Mozart by 34 years, but the rumor that he poisoned him probably isn't true
[A]: antonio salieri


[Q]: Category: THE WHITE HOUSE 
Clue: When electric lights were installed in 1891, this pres., afraid of being shocked, wouldn't operate the switches
[A]: benjamin harrison


[Q]: Category: MEDICINE 
Clue: For an upper GI you drink this; for a lower GI... well, we won't talk about that
[A]:
barium