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 eats bacon
Hypothesis: Before, PersonX needed to check fridge to see if he has any bacon
Update: PersonX is sitting at a table in a diner.
Example Output: weakener

Example Input: Premise: PersonX takes it seriously
Hypothesis: As a result, PersonX wants to be known as a professional
Update: They have worked in the field for years
Example Output: strengthener

Example Input: Premise: PersonX hits the gas
Hypothesis: PersonX then pulled over
Update: PersonX sped up to 90 miles per hour in a 60 miles per hour zone.
Example Output:
strengthener