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: Two little girls reading and a baby listening.
Hypothesis: The baby is the girl's sibling.
Update: They are sitting on a living room floor, surrounded by their toys.

Answer: strengthener


Question: Premise: Young rock wall climbers brave the massive structure with precision and ease.
Hypothesis: The climbers are big.
Update: The climbers are college students.

Answer: strengthener


Question: Premise: A skier navigates his path downhill.
Hypothesis: A skier skillfully goes down the hill
Update: `The skier dodges trees after veering off the path.

Answer:
weakener