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.

Example Input: Premise: PersonX moves toward the door
Hypothesis: Before, PersonX needed to turn around
Update: PersonX was heading out of the house.
Example Output: weakener

Example Input: Premise: PersonX becomes a chef
Hypothesis: PersonX is seen as like they have found a suitable occupation
Update: PersonX promises themself they'll find another job after every shift.
Example Output: weakener

Example Input: Premise: PersonX buys one anyway
Hypothesis: Because PersonX wanted to own it.
Update: PersonX stops looking for one.
Example Output:
weakener