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: Two males are laying their head down in a restaurant.
Hypothesis: The men are sleepy.
Update: They just worked a 12 hour shift.
Example Output: strengthener

Example Input: Premise: A man is sweeping a tile floor with a broom.
Hypothesis: The man is sweeping up the floor in his kitchen.
Update: There are toilets in the room.
Example Output: weakener

Example Input: Premise: Children jump on a trampoline.
Hypothesis: Who can jump the highest wins
Update: The children bounce down as hard as possible each time
Example Output:
strengthener