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 finds a girl
Hypothesis: Before, PersonX needed to ask them out
Update: PersonX is in a long term and committed relationship.
Example Output: weakener

Example Input: Premise: PersonX lets PersonY explain
Hypothesis: PersonX is seen as satisfied.
Update: PersonY had a good explanation
Example Output: strengthener

Example Input: Premise: PersonX is on a family trip
Hypothesis: As a result, PersonX feels friendly
Update: PersonX feel more relaxed and open on vacation.
Example Output:
strengthener