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 PersonY average
Hypothesis: PersonX then is praised
Update: PersonY is grateful to no longer be the usually slowest member.
Example Output: weakener

Example Input: Premise: PersonX complains to the manager
Hypothesis: Before, PersonX needed approach the manager
Update: Person X had to get up.
Example Output: strengthener

Example Input: Premise: PersonX has back pain
Hypothesis: Before, PersonX needed to of sat in a uncomfortable chair
Update: X lifted a heavy box.
Example Output:
weakener