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.
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Question: Premise: A woman stands in front of a fence and next to a bucket, chewing her nails.
Hypothesis: The nervous woman chews her nails in front of the fence next to the bucket.
Update: She is chewing her nails because she has no nail trimmer.

Answer: weakener


Question: Premise: A young boy in red swim shorts playing with sand on a beach.
Hypothesis: A boy is building a sandcastle.
Update: He uses a shovel to dig a moat.

Answer: strengthener


Question: Premise: A man raising or lowering a blue and red garage door next to a nail polish poster.
Hypothesis: A man likes to collect nail polish posters
Update: Visible in the garage are several nail polish posters on the wall.

Answer:
strengthener