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 takes PersonX's pick
Hypothesis: PersonX then gets excited
Update: Their pick was the best one
Example Output: strengthener

Example Input: Premise: PersonX meets PersonY's friends
Hypothesis: PersonX then is rejected
Update: PersonY's friends invite PersonX to join their club.
Example Output: weakener

Example Input: Premise: PersonX studies for a test
Hypothesis: PersonX then does well on test
Update: PersonX made a cheat sheet for the test.
Example Output:
weakener