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 is able to relax
Hypothesis: Because PersonX wanted to get to bed
Update: PersonX had a lot of work and chores left undone.
Example Output: weakener

Example Input: Premise: PersonX causes the smell
Hypothesis: PersonX then begins to smell
Update: PersonX throws a rotten egg off the side of a building.
Example Output: weakener

Example Input: Premise: PersonX visits PersonY at work
Hypothesis: PersonX then walk into PersonY's ofice
Update: PersonY is wearing a suit and tie
Example Output:
strengthener