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 looks back at PersonY
Hypothesis: As a result, PersonX feels curious
Update: PersonY gives PersonX a wave.

SOLUTION: weakener

PROBLEM: Premise: PersonX gets PersonX's juices flowing
Hypothesis: PersonX is seen as full of adrenaline
Update: PersonX is writing a creative story

SOLUTION: weakener

PROBLEM: Premise: PersonX gets a ride
Hypothesis: PersonX is seen as thankful
Update: PersonX does not tip the taxi driver

SOLUTION:
weakener