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 man is driving a white van sprayed painted with graffiti.
Hypothesis: A man is driving away from some cops.
Update: The man forgot his wallet at work.

Ex Output:
weakener


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: A blond-hair boy wearing a light blue sweater and light blue shorts walks along a dirt path.
Hypothesis: A boy is walking up a dirt path with a friend.
Update: He is having a conversation with someone else.

Ex Output:

strengthener