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.

[Q]: Premise: Various people out and about in a public place on an autumn day.
Hypothesis: A group of classmates out and about in public on an autumn day.
Update: There is a school bus parked nearby.
[A]: strengthener


[Q]: Premise: A group of black boys in a classroom setting wearing white shirts, listening to a speech about UNICEF.
Hypothesis: A group of high school students hear about the advantages of donating to UNICEF.
Update: The boys' teacher used to work for UNICEF.
[A]: strengthener


[Q]: Premise: A young girl in a green shirt and shorts out riding her bike past a very nice apartment building.
Hypothesis: A young girl rides her bike for fun.
Update: The young girl smiles as she rides her bike with no particular place to go.
[A]:
strengthener