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 man in a yellow jersey with a large mustache is playing hockey outside.
Hypothesis: A man is on roller blades.
Update: The man is running very fast.
weakener

Premise: People hurrying to get to work in a busy city.
Hypothesis: People waiting at a bus stop.
Update: The people wait on the sidewalk as a bus pulls up by them.
strengthener

Premise: A worker straddles the beams of a building being constructed.
Hypothesis: the worker plays a dangerous game
Update: The worker relies on his balance to keep him steady.

strengthener