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: "E" GADS! 
Clue: In 1986 they became the first siblings inducted into the Rock & Roll Hall of Fame

SOLUTION: the everly brothers

PROBLEM: Category: DRAMA 
Clue: Sula & Helena are robotesses in this Karel Capek play

SOLUTION: "r.u.r."

PROBLEM: Category: GOVERNMENT & POLITICS 
Clue: Of the 3 branches of government, the one including the Supreme Court

SOLUTION:
the judicial branch