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 group of people eating outdoors.
Hypothesis: Men and women are having food.
Update: The people have worksheets for a Men's Trauma Healing Workshop.
Example Output: weakener

Example Input: Premise: A bunch of people standing on sand.
Hypothesis: people are standing on a beach.
Update: Everyone is standing barefoot on hot sand.
Example Output: strengthener

Example Input: Premise: A bearded man wearing a painter's cap is playing the xylophone on the side of a busy walkway.
Hypothesis: A human with a duck
Update: The man's animal makes quacking noises.
Example Output:
strengthener