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 lady pushes a stroller, behind a child, riding a tricycle, while another child walks along side.
Hypothesis: A lady is pushing a stroller with a baby inside
Update: As a squirrel runs up a tree, barking is heard from inside the stroller.

SOLUTION: weakener

PROBLEM: Premise: Two men and a woman running together for a competition.
Hypothesis: The men and woman are teaming up.
Update: They are on a relay team

SOLUTION: strengthener

PROBLEM: Premise: Two children in their pajamas one has a mask and hairnet like a surgical nurse and is standing over the older child who is laying down on the wood floor.
Hypothesis: The one in the mask will become a surgeon someday.
Update: The child in the mask likes helping people.

SOLUTION:
strengthener