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 goes as well
Hypothesis: Before, PersonX needed be invited to a party
Update: PersonX is prim and proper

SOLUTION: strengthener

PROBLEM: Premise: PersonX gets a replacement
Hypothesis: PersonX is seen as satisfied
Update: The replacement works flawlessly.

SOLUTION: strengthener

PROBLEM: Premise: PersonX sends PersonY a gift
Hypothesis: Because PersonX wanted to make persony happy.
Update: PersonX notes "return to sender" on the package

SOLUTION:
weakener