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.
Q: The woman felt nostalgic.
(1)She ran into a childhood friend.(2)She yelled at her children.
A: 
1