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.

Ex Input:
Premise: People walking along a pathway along a lake.
Hypothesis: People may going swimming in the lake.
Update: The people are wearing swimsuits.

Ex Output:
strengthener


Ex Input:
Premise: An Asian man performing on a stage.
Hypothesis: A man singing.
Update: The man performs an opera aria.

Ex Output:
strengthener


Ex Input:
Premise: outside in a courtyard, people are walking by in the nighttime
Hypothesis: There are stars in the sky.
Update: People are carrying umbrellas to shield from the rain

Ex Output:

weakener