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: Several men helping each other pull in a fishing net.
Hypothesis: The men are fishing.
Update: There is an old tire in the net.

SOLUTION: weakener

PROBLEM: Premise: A young boy wearing goggles, a vest, and arm floaties is swimming in a pool.
Hypothesis: A boy is learning to swim.
Update: The boy is accompanied by an instructor.

SOLUTION: strengthener

PROBLEM: Premise: A street vendor tending to bagels in food cart.
Hypothesis: The vendor is spreading cream cheese on the bagels.
Update: He makes a circular motion with his hand.

SOLUTION:
strengthener