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: Two hockey players trying to score in their opponents goal.
Hypothesis: two hockey players are looking for the puck
Update: They are both looking directly at the puck.

Ex Output:
weakener


Ex Input:
Premise: A child in a green cap sits at a boats controls.
Hypothesis: watched by a group
Update: 3 women stare at him.

Ex Output:
strengthener


Ex Input:
Premise: Several people walking past a food cart on a city street.
Hypothesis: Dozens of people walk past a smelly lunch truck.
Update: The lunch truck serves salads.

Ex Output:

weakener


