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]: Sunlight entered the room.
(1)I opened the curtains.(2)I unlocked the door.
[A]: 1


[Q]: The army surrendered the battle.
(1)They were outnumbered.(2)They stormed the city.
[A]: 1


[Q]: The computer crashed.
(1)I backed up my files.(2)I downloaded a virus.
[A]:
2