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 man in a hat is sitting with his hands folded.
Hypothesis: The man is patiently waiting for someone.
Update: The man is pacing back and forth.
Example Output: weakener

Example Input: Premise: A pipe with one hand on it.
Hypothesis: The pipe is broken.
Update: There is water flowing through the pipe.
Example Output: weakener

Example Input: Premise: Outdoors in a park, eight people stand close to a cluttered picnic table.
Hypothesis: The eight friends were celebrating their high school graduation at the park.
Update: They are middle aged.
Example Output:
weakener