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

SOLUTION: strengthener

PROBLEM: Premise: PersonX tastes fine
Hypothesis: Before, PersonX needed work as food critic
Update: PersonX is a professional food taster.

SOLUTION: strengthener

PROBLEM: Premise: PersonX is learning to skateboard
Hypothesis: Before, PersonX needed buy a skateboard
Update: PersonX borrows

SOLUTION:
strengthener