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: 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: A woman serving a tennis ball.
Hypothesis: A woman is playing tennis with her husband.
Update: She has a basket of balls to practice with alone.
answer:
weakener


question:
Premise: A white dog and a brown dog are by a stream.
Hypothesis: Two dogs are sitting by a stream after going for a swim.
Update: The dogs are perfectly dry.
answer:

weakener