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.

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

Premise: PersonX keeps mum
Hypothesis: As a result, PersonX feels secretive
Update: They are guilty
strengthener

Premise: PersonX gets PersonX's haircut
Hypothesis: As a result, PersonX wants to look in the mirror
Update: PersonX wonders how the haircut looks.

strengthener