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 in a long-sleeved white shirt and light tan shorts is mowing the lawn near a brick wall with small trees along it.
Hypothesis: a man mowes his lawn becuase it was to long
Update: It is impossible to tell what the man has already mowed from what is left to mow.
Example Output: weakener

Example Input: Premise: A young man is presenting another woman with a cake with three candles on top.
Hypothesis: The cake has white frosting.
Update: The dark chocolate cake was the woman's favorite flavor.
Example Output: weakener

Example Input: Premise: A man with blue boxing gloves is throwing punches.
Hypothesis: A person is punching another person.
Update: A punching bag is in front of the man.
Example Output:
weakener