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: a dog jumps into the pond.
Hypothesis: A dog jumps to get his ball.
Update: The dog likes to swim

Ex Output:
weakener


Ex Input:
Premise: Three boys in t-shirt standing outside of a dilapidated building.
Hypothesis: They used to live in the building.
Update: A woman stands in a doorway motioning for the boys to come to dinner.

Ex Output:
weakener


Ex Input:
Premise: Two men; one in a blue shirt and ball cap, and the other in a white shirt playing frisbee on a field near an airport.
Hypothesis: Two men are having fun playing frisbee on a nice day.
Update: The sun is shining and the men are smiling.

Ex Output:

strengthener