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 tracks PersonY
Hypothesis: Before, PersonX needed find out PersonY's habits.
Update: X hired a PI.

Ex Output:
strengthener


Ex Input:
Premise: PersonX feels like going
Hypothesis: Because PersonX wanted to do something elsewhere
Update: PersonX is agoraphobic and hates leavning their house.

Ex Output:
weakener


Ex Input:
Premise: PersonX adopts a kitten
Hypothesis: Before, PersonX needed to have a home
Update: All of PersonX's personal belongings are in their car.

Ex Output:
weakener