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: A woman stands in front of a man holding a small, smiling baby.
Hypothesis: A mother standing with her husband look at their baby.
Update: The man kisses the woman as they gaze at the baby.

Answer: strengthener


Question: Premise: A man is helping another man after a fall on the street.
Hypothesis: The man is his brother.
Update: The men look almost identical to each other.

Answer: strengthener


Question: Premise: A man and a woman standing on a city street talking to each other.
Hypothesis: They are boyfriend and girlfriend.
Update: One of them is a street vendor.

Answer:
weakener


