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: Man with children near a bench in a suburban area.
Hypothesis: Tall humans near a bench
Update: The man is eye level with the children.
Example Output: weakener

Example Input: Premise: A couple kissing on the neck on a busy street.
Hypothesis: The couple is male and female.
Update: The two people kissing are David and Emily.
Example Output: strengthener

Example Input: Premise: A group of pedestrians walk down a city street.
Hypothesis: The pedestrians are talking to each other as they walk down a city street.
Update: They look straight ahead and don't open their mouths.
Example Output:
weakener