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 immediately ran
Hypothesis: As a result, PersonX feels athletic
Update: PersonX feels muscles building.
strengthener

Premise: PersonX ends PersonX's trip
Hypothesis: PersonX is seen as free to pursue other things
Update: PersonX is called back to work
weakener

Premise: PersonX suits to PersonX's needs
Hypothesis: PersonX is seen as happy
Update: PersonX feels relief after suiting needs.
strengthener