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 simplicity, answers should be in all lower cased letters.
PROBLEM: Category: CLASSICAL MUSICIANS 
Clue: In 1793, Haydn wrote he will be "one of Europe's finest composers, & I shall be proud to be called his teacher"

SOLUTION: ludwig van beethoven

PROBLEM: Category: MILITARY NEWS 
Clue: On June 11, 1997 the Army deactivated the 43rd Mobile Army Surgical Hospital, its last, in this country

SOLUTION: korea

PROBLEM: Category: LEGAL TERMS 
Clue: In 1999 Britain replaced Latin legal terms with English ones; "witness summons" replaced this word

SOLUTION:
subpoena