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: ARTISTS 
Clue: As of Oct. 1999, of the 10 most expensive paintings sold at public auction, these 2 artists had 4 each on the list

SOLUTION: pablo picasso & vincent van gogh

PROBLEM: Category: IN THE NEWS 
Clue: In 1951 Elizabeth II attended one of these in Canada; she attended her next one, also in Canada, on October 6, 2002

SOLUTION: hockey game

PROBLEM: Category: SECRETARIES OF STATE 
Clue: In 1947 he said Europe's food needs require "substantial additional help" to prevent social deterioration

SOLUTION:
george c. marshall