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.

Ex Input:
Premise: Various people out and about in a public place on an autumn day.
Hypothesis: A group of classmates out and about in public on an autumn day.
Update: There is a school bus parked nearby.

Ex Output:
strengthener


Ex Input:
Premise: A boy is doing a stunt with his skateboard.
Hypothesis: A boy is doing tricks at a skate park.
Update: The boy is in his driveway.

Ex Output:
weakener


Ex Input:
Premise: A woman and child are walking.
Hypothesis: The woman and the child are at the park.
Update: They're going down a sidewalk

Ex Output:

weakener