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.
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Question: Premise: Woman and young lady sit on the sidewalk while young man plays flute in background.
Hypothesis: The man is secretly a Russian spy watching the womens' every move.
Update: He surreptitiously snaps a photo.

Answer: strengthener


Question: Premise: Children sit in a classroom holding slates.
Hypothesis: The children are praticing math.
Update: The children are drawing pictures.

Answer: weakener


Question: Premise: An Asian girl wearing a white leotard and white stockings stands on her tiptoes as she dances ballet.
Hypothesis: A girl is performing her first ballet recital.
Update: The girl has chronic blisters on her feet.

Answer:
weakener