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 plays basketball every day
Hypothesis: PersonX is seen as happy
Update: Person X is the best player on the team and screams out loud when he slam dunks.
Example Output: strengthener

Example Input: Premise: PersonX feels good about PersonY's decision
Hypothesis: As a result, PersonX feels proud
Update: PersonY decided to go to PersonX'a alma mater.
Example Output: strengthener

Example Input: Premise: PersonX forgets PersonX's problems
Hypothesis: As a result, PersonX wants get angry
Update: PersonX has a short fuse
Example Output:
strengthener