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 learns fast
Hypothesis: Because PersonX wanted to pass the test.
Update: PersonX is playing basketball
Example Output: weakener

Example Input: Premise: PersonX builds a house
Hypothesis: PersonX then gets to live in the house
Update: PersonX is a homesteader
Example Output: strengthener

Example Input: Premise: PersonX bases upon research
Hypothesis: As a result, PersonX feels experimental
Update: PersonX trusts the conclusion.
Example Output:
weakener