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.

Premise: A woman is standing near the water, looks to be throwing something.
Hypothesis: The woman is skipping rocks.
Update: The woman is looking for turtles.
weakener

Premise: a lone skier skiing down a snowy mountain on one ski.
Hypothesis: The skier has one broken ski.
Update: The ski was too big for his foot.
weakener

Premise: There is a street with people walking and walking their bikes, in particular one man in the forefront who have a black cowboy hat and black clothing on and a handlebar mustache.
Hypothesis: the men are sailors
Update: None of the men know how to swim.

weakener