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 gives under PersonY hand
Hypothesis: PersonX is seen as defeated
Update: Person X was using Person Y's momentum against them.
Example Output: weakener

Example Input: Premise: PersonX accomplishes PersonX's task
Hypothesis: Before, PersonX needed to work consistently
Update: X enjoyed regular hours.
Example Output: strengthener

Example Input: Premise: PersonX finds online
Hypothesis: PersonX then achieves goal
Update: X writes her paper and receives an A.
Example Output:
strengthener