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 dresses for school
Hypothesis: Because PersonX wanted to go
Update: PersonX is the type of person who enjoys school.
Example Output: strengthener

Example Input: Premise: PersonX texts PersonY
Hypothesis: PersonX is seen as relieved
Update: PersonY passes the test.
Example Output: strengthener

Example Input: Premise: PersonX would arrive
Hypothesis: As a result, PersonX wants to go somewhere
Update: By the time he got there dinner would be over so he desired fast food.
Example Output:
strengthener