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 man wearing a jersey with the number 13 on it is ready to bat at a ball while people in the stands look on.
Hypothesis: A man with jersey number 13 is in the middle of a baseball game.
Update: The bat is flattened.
Example Output: weakener

Example Input: Premise: A man is biting his tongue while throwing some food and attempting to catch it in a frying pan.
Hypothesis: The man is psychotic.
Update: The man is a TV chef known for his unconventional presentation style.
Example Output: weakener

Example Input: Premise: Three policemen sitting on top of their horses.
Hypothesis: The three policemen on horseback are guarding the entrance.
Update: The policemen are wearing costumes on stage.
Example Output:
weakener