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 floats away
Hypothesis: As a result, PersonX feels ethereal
Update: PersonX is lost at sea.
Example Output: weakener

Example Input: Premise: PersonX wants to go again
Hypothesis: Because PersonX wanted to enjoy the ride
Update: PersonX is ready to go home.
Example Output: weakener

Example Input: Premise: PersonX goes the principal 's office
Hypothesis: PersonX then gets lectured
Update: PersonX started a food fight at lunch
Example Output:
strengthener