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.

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.
strengthener

Premise: An all-female band plays drums and guitar on a stage, in front of a banner reading "Screaming Orphans."
Hypothesis: The band name is "Screaming Orphans"
Update: The band is playing for free for charity.
weakener

Premise: Two young girls, one blond and the other brunette, jump on a green couch in a bright, sun drenched room.
Hypothesis: The girls are excited.
Update: Mother has told them they are going to the beach tomorrow.

strengthener