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 young boy in a black jacket is running towards a woman with outstretched arms.
Hypothesis: A young boy runs to his mother for a hug.
Update: The boy calls the woman 'Mommy'
Example Output: strengthener

Example Input: Premise: Two men ride horses while wielding whips.
Hypothesis: Two men are racing horses.
Update: Two men wield whips as they ride horses pulling plows behind them.
Example Output: weakener

Example Input: Premise: A person with a green long-sleeved shirt and jeans welding a metal object.
Hypothesis: A person is welding a metal sculpture.
Update: They are in a factory
Example Output:
weakener