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.

Input: Consider Input: Premise: Man on roof touching a shingle.
Hypothesis: Human on top of bulding grabbing a shingle.
Update: The man moves his hands over to the chimney and hangs onto it.

Output: weakener


Input: Consider 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.

Output: strengthener


Input: Consider Input: Premise: Two girl in hoodies lay on a bed.
Hypothesis: Two sisters are on the bed wearing hoodies.
Update: the girls live in the same house


Output: strengthener