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.

Example Input: Premise: Five women are sitting in a greenhouse with desert succulent plants, possibly reading or discussing something together.
Hypothesis: The female friends are taking care of the new greenhouse.
Update: One woman gets up to tend to the flowers.
Example Output: strengthener

Example Input: Premise: The sky appears clear.
Hypothesis: The sky looked very clear at night.
Update: Many stars are visible.
Example Output: strengthener

Example Input: Premise: A little boy in blue is jumping in the air.
Hypothesis: A young man in blue overalls is jumping happily in the air.
Update: The boy lives on a farm.
Example Output:
strengthener