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 brown dog splashing through a puddle on a lawn
Hypothesis: The dog plays in the puddle during the rainstorm.
Update: Its owner took it to the dog park

Ex Output:
strengthener


Ex Input:
Premise: Black man working on a plywood stage.
Hypothesis: A man is cleaning the theater
Update: The man is holding a mop next to a bucket of soapy water.

Ex Output:
strengthener


Ex Input:
Premise: Couple dancing in the center of a circle of spectators.
Hypothesis: A pair of dancers have fun at prom.
Update: The banner reads 'Square Dance Competition'.

Ex Output:

weakener