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. It makes you much less likely to believe the hypothesis is true. A strengthener is a statement that strengthens the hypothesis. It makes you much more likely to believe the hypothesis is true. Your task is to output 'strengthener' or 'weakener' if the update strengths or weakens the hypothesis, respectively.

Ex Input:
Premise: PersonX speaks with PersonY
Hypothesis: Before, PersonX needed locate y
Update: PersonX walked to PersonY's house.

Ex Output:
strengthener


Ex Input:
Premise: PersonX sets a trap
Hypothesis: As a result, PersonX wants to go back to work
Update: X wants to get the guilty party.

Ex Output:
strengthener


Ex Input:
Premise: PersonX performs the heimlich maneuver
Hypothesis: As a result, PersonX wants to make sure the person is better
Update: PersonX passed out from the experience

Ex Output:

weakener