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.

Marine life diminished.
(1)Boats sailed through the ocean.(2)Oil spilled into the ocean.
2

The patient went into a coma.
(1)He suffered emotional trauma.(2)He suffered brain damage.
2

The two children simultaneously reached down to retrieve the ball.
(1)The ball rolled away.(2)Their heads collided.

2