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 young boy wearing a black t-shirt, holding a green baby lizard.
Hypothesis: a boy holding a lizard  that he just found
Update: The boy is in the desert.

Ex Output:
strengthener


Ex Input:
Premise: A person is writing on a chalkboard in a empty classroom.
Hypothesis: A man is doing math on a chalkboard.
Update: the person is a talented drawer.

Ex Output:
weakener


Ex Input:
Premise: a man drinking out of a yellow cup around people at a busy event
Hypothesis: A man drinks beer at the party.
Update: There is a keg of beer near him with a stack of yellow cups on top of it.

Ex Output:

strengthener