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: a dog jumps into the pond.
Hypothesis: A dog jumps to get his ball.
Update: The dog likes to swim

SOLUTION: weakener

PROBLEM: Premise: A female doctor is talking to an elderly patient having tests run.
Hypothesis: A female doctor is running blood tests on the patient.
Update: The doctor is making sure the patient has no metal on them

SOLUTION: weakener

PROBLEM: Premise: A group of people are standing on a street corner.
Hypothesis: They are waiting for traffic to stop.
Update: There is a "DO NOT WALK" sign lit up.

SOLUTION:
weakener