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 gives tom
Hypothesis: Before, PersonX needed to have something to give
Update: X passes along his knowledge.

Ex Output:
strengthener


Ex Input:
Premise: PersonX sees wood
Hypothesis: PersonX is seen as happy
Update: X hates the out of doors.

Ex Output:
weakener


Ex Input:
Premise: PersonX takes PersonY's lives
Hypothesis: Before, PersonX needed shoot person y in the heart
Update: PersonX is a veteranarian who must euthanize animals as part of his job.

Ex Output:
weakener