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, that is, it makes you much less likely to believe the hypothesis is true. A strengthener is a statement that strengthens the hypothesis, that is, it makes you much more likely to believe the hypothesis is true. Your task is to answer with 'strengthener' or 'weakener' if the update strengthens or weakens the hypothesis, respectively.

Example Input: Premise: A red desk chair has been rolled away from the desk.
Hypothesis: Someone wants to sit at the chair.
Update: The chair has been rolled up to a table.
Example Output: strengthener

Example Input: Premise: Two boys playing on a trampoline.
Hypothesis: Two boys playing chess on a trampoline.
Update: There is a checkered board on top of the trampoline.
Example Output: strengthener

Example Input: Premise: A city street is shown with a large number of people and double-decker buses.
Hypothesis: People trying to climb a bus on a crowded street.
Update: People are getting off of all the buses
Example Output:
weakener