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.

Q: Premise: Side view of a female triathlete during the run.
Hypothesis: A woman winning the triathalon
Update: Someone crossed the finish line just before the woman.

A: weakener
****
Q: 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.

A: weakener
****
Q: Premise: The mother is helping her baby brush his teeth with his big boy green toothbrush.
Hypothesis: The mother and baby are at the bathroom sink
Update: The bathroom mirror is large.

A:
strengthener
****