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: EXPRESSIONS 
Clue: This positive expression used since the 1940s promotes a type of stove

SOLUTION: "now you\'re cooking with gas"

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

SOLUTION: "r.u.r."

PROBLEM: Category: "C" IN GEOGRAPHY 
Clue: Perry, the barber turned singer, might enjoy visiting this lake and province in Lombardy

SOLUTION:
como