TASK DEFINITION: In this task, you are given a premise, a hypothesis, and an update. The premise sentence describes a real-world situation and is always assumed to be true. The hypothesis sentence describes an assumption or inference that you might make about that situation having read the premise. The update provides additional information about the situation that might weaken or strengthen the hypothesis. A weakener is a statement that weakens the hypothesis, that is, it makes you much less likely to believe the hypothesis is true. A strengthener is a statement that strengthens the hypothesis, that is, it makes you much more likely to believe the hypothesis is true. Your task is to answer with 'strengthener' or 'weakener' if the update strengthens or weakens the hypothesis, respectively.
PROBLEM: Premise: Birds are fleeing a rock that has recently been splashed by heavy waves.
Hypothesis: Birds are moving away from a wet rock, while its cold outside.
Update: A boat with hunters on it splashed the waves

SOLUTION: weakener

PROBLEM: Premise: A man in a dark pants lifts his leg while five girls wearing rollerskates gather near him.
Hypothesis: A coach gives advice to his team.
Update: The man is a celebrity

SOLUTION: weakener

PROBLEM: Premise: A man picking up rocks along the beach.
Hypothesis: A man picks up rocks while looking for treasure.
Update: The man is dressed in a uniform bearing the city's name

SOLUTION:
weakener