instruction:
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.
question:
Premise: Two smiling people with dark hair.
Hypothesis: Two people are happy and smiling at a joke.
Update: They are at a comedian's performance.
answer:
strengthener


question:
Premise: A man sawing wood on a fence.
Hypothesis: It's sunny outside while a man is cutting wood.
Update: The man is wearing a visor and sunglasses.
answer:
strengthener


question:
Premise: Boy swinging on a swing set.
Hypothesis: Boy swinging on a swing set with a slide.
Update: Boy runs from swing to ladder to reach top platform to glide down.
answer:

strengthener