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 texts PersonY
Hypothesis: PersonX is seen as relieved
Update: PersonY passes the test.
Example Output: strengthener

Example Input: Premise: PersonX walks to PersonX's desk
Hypothesis: PersonX then hears laughter
Update: PersonX has toilet paper stick to their shoes
Example Output: strengthener

Example Input: Premise: PersonX loves it so much
Hypothesis: Before, PersonX needed to discover jazz music
Update: PersonX had been trying to expand their horizons.
Example Output:
strengthener