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: FOUNDERS 
Clue: In 1958 former high school principal Dr. Ethel Andrus founded this group, the AARP

SOLUTION: american association of retired persons

PROBLEM: Category: THE TOWER 
Clue: Lightning not only strikes the same place twice, it strikes this 110-story Chicago tower hundreds of times a year

SOLUTION: sears tower

PROBLEM: Category: GUITAR PLAYER 
Clue: Jack Bruce, Sid Vicious & John Entwistle are all famous for playing this instrument

SOLUTION:
the bass