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: '70s MUSIC 
Clue: This jazz-rock group gave us the songs "25 or 6 to 4" & "Does Anybody Really Know What Time It Is?"

SOLUTION: chicago

PROBLEM: Category: APPROBATION 
Clue: Japanese consul Chiune Sugihara, who saved hundreds of Jews in WWII, bears the title "Righteous" this

SOLUTION: gentile

PROBLEM: Category: VENEZUELA VITALS 
Clue: In 1960 Venezuela formed this organization with Iran, Iraq, Kuwait & Saudi Arabia

SOLUTION:
opec