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 hears a loud crack
Hypothesis: As a result, PersonX wants to cover their head
Update: PersonX is standing outdoors.
Example Output: weakener

Example Input: Premise: PersonX buys an expensive car
Hypothesis: As a result, PersonX wants ride the car
Update: PersonX finds long drives relaxing.
Example Output: strengthener

Example Input: Premise: PersonX feels much better now
Hypothesis: As a result, PersonX wants rest
Update: PersonX still feels a little bit under the weather.
Example Output:
strengthener