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: The white dog stands in the snow wearing a black jacket.
Hypothesis: The dog is dressed for the snow.
Update: The dog thinks he's a person.

SOLUTION: weakener

PROBLEM: Premise: A boy in a red shirt riding a bike.
Hypothesis: A boy is riding a bike to school.
Update: It is a lovely Sunday afternoon.

SOLUTION: weakener

PROBLEM: Premise: a multicolored dog running through a flowery field
Hypothesis: A puppy happily chases butterflies in a meadow.
Update: The dog is wearing a police vest.

SOLUTION:
weakener