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 tells on PersonY
Hypothesis: As a result, PersonX feels manipulative
Update: PersonX promised PersonY they wouldn't tell
Example Output: strengthener

Example Input: Premise: PersonX starts PersonX's car
Hypothesis: PersonX is seen as great
Update: PersonX needed to get to work.
Example Output: weakener

Example Input: Premise: PersonX uses PersonY program
Hypothesis: Before, PersonX needed to practice using the program
Update: PersonX helped develop the program.
Example Output:
weakener