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: The clock stopped ticking.
(1)I took extra time to get ready.(2)The clock showed the wrong time.

SOLUTION: 2

PROBLEM: The man wore a lifejacket in the water.
(1)He couldn't swim.(2)The water was shallow.

SOLUTION: 1

PROBLEM: The tree branch landed in the river.
(1)The branch moved downstream.(2)The river's current became stronger.

SOLUTION:
1