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 rolls on PersonY's back
Hypothesis: PersonX is seen as in control
Update: PersonY taps out
strengthener

Premise: PersonX wants to buy it
Hypothesis: As a result, PersonX wants to show it off to his friends
Update: It is extremely aesthetically pleasing.
strengthener

Premise: PersonX holds PersonX's baby
Hypothesis: Because PersonX wanted to be nurturing
Update: PersonX moves the baby to seat and feeds it

weakener