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.

The farmland needed irrigation.
(1)A canal was constructed.(2)A flood occurred.
1

The woman was mistaken for her sister.
(1)The woman was close with her sister.(2)The woman looked like her sister.
2

The bird flapped its wings.
(1)It laid eggs.(2)It ascended upwards.

2