TASK DEFINITION: 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.
PROBLEM: Premise: Two men are kidding around as a woman watches them.
Hypothesis: A woman watches men laughing at the bar.
Update: The two men are fighting each other.

SOLUTION: weakener

PROBLEM: Premise: Two men are climbing up a steep rock face with moss growing out of it.
Hypothesis: Two men are climbing up a steep rock face to meet someone.
Update: They are leading the way in a rock climbing competition.

SOLUTION: weakener

PROBLEM: Premise: A woman is watching a black dog.
Hypothesis: a woman is looking at a black labrador
Update: The woman and dog are at a Labrador rescue center.

SOLUTION:
strengthener