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.

Example Input: Premise: PersonX searches everywhere
Hypothesis: PersonX then finds lost dog
Update: They are crying tears of joy
Example Output: strengthener

Example Input: Premise: PersonX is a great basketball player
Hypothesis: PersonX is seen as accomplished.
Update: PersonX wins the title.
Example Output: strengthener

Example Input: Premise: PersonX starts PersonX's truck
Hypothesis: PersonX then goes to work
Update: PersonX is on vacation
Example Output:
weakener