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.

Example Input: 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.
Example Output: weakener

Example Input: Premise: Several men dressed in blue uniforms march.
Hypothesis: Several men dressed in blue uniforms march in the parade
Update: The men start to draw their weapons on command.
Example Output: weakener

Example Input: Premise: Guys on the roof doing their work.
Hypothesis: 30 guys are on the roof working.
Update: The roof is on a tiny storage shed.
Example Output:
weakener