TASK DEFINITION: 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 consistency, answers should be in all lower cased letters.
PROBLEM: Category: INITIALS M.S. 
Clue: She was in the TV miniseries "Holocaust" & starred in the Holocaust film "Sophie's Choice"

SOLUTION: meryl streep

PROBLEM: Category: ABBR. 
Clue: Computer users should know that BBS stands for this

SOLUTION: bulletin board system

PROBLEM: Category: TRAVEL INDIANAPOLIS 
Clue: Union Station has a hotel that features these sleeping cars converted into hotel suites

SOLUTION:
pullman cars