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

Example Input: Premise: PersonX knows the answer
Hypothesis: Before, PersonX needed get asked
Update: PersonX was watching a trivia show.
Example Output: weakener

Example Input: Premise: PersonX goes through the mill
Hypothesis: Before, PersonX needed tO KNOW WHERE THE MILL IS
Update: PersonX is lost in the woods.
Example Output:
weakener