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.

Category: AMERICAN LEGAL HISTORY 
Clue: 5 of the women condemned in Salem in 1692 were finally exonerated by a bill signed on this day in 2001
halloween

Category: ART 
Clue: The Italian name of this 15th century masterpiece is "L'Ultima Cena"
\"the last supper\"

Category: SPACE EXPLORATION 
Clue: Now 6 billion miles from Earth, Pioneer 10 originally was launched in 1972 on a mission to this planet

jupiter