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 group of little girls jumping together in a backyard.
Hypothesis: A group of girls are laughing.
Update: The girls are alone with one another and they are not being told what to do by anyone

Ex Output:
strengthener


Ex Input:
Premise: A hiker walks on rocky ground at the base of a foggy mountain.
Hypothesis: The hiker is looking for a ledge to climb.
Update: He just came from the top of the mountain.

Ex Output:
weakener


Ex Input:
Premise: Homeless person sleeping in the park in New york city.
Hypothesis: A homeless person is sleeping on a bench outside.
Update: He is enjoying his brand new refrigerator box he found.

Ex Output:

weakener