TASK DEFINITION: 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.
PROBLEM: Premise: PersonX is playing tennis
Hypothesis: Because PersonX wanted get some exercise
Update: X is trying to lose 10 lbs.

SOLUTION: strengthener

PROBLEM: Premise: PersonX calls PersonX's father
Hypothesis: As a result, PersonX wants to ask if their father needs help
Update: PersonX's father left a strange voicemail

SOLUTION: strengthener

PROBLEM: Premise: PersonX accepts the challenge
Hypothesis: As a result, PersonX feels determined
Update: There is a large prize for winning the challenge.

SOLUTION:
strengthener