TASK DEFINITION: Given a premise and two alternatives, choose the alternative that is a more plausible cause or effect of the situation described by the premise. The input format is "premise
(1)alternative_1(2)alternative_2", the output should either be "1" or "2" based on your judgment.
PROBLEM: I declined the invitation to the birthday party.
(1)I was lonely.(2)I was out of town.

SOLUTION: 2

PROBLEM: The man swatted at the fly.
(1)The fly buzzed away.(2)The fly stayed still.

SOLUTION: 1

PROBLEM: The girl found the missing puzzle piece.
(1)She completed the puzzle.(2)She took apart the puzzle.

SOLUTION:
1