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: Two women stand in the foreground making foolish faces in front of a diverse crowd of young people.
Hypothesis: Two teachers are making funny faces at their students.
Update: The people are in a classroom.

Ex Output:
strengthener


Ex Input:
Premise: Two people in front of a crowd who are wearing Native American robes and accessories.
Hypothesis: Two karate masters prepare for a fight.
Update: Someone interviewing the two men asks 'So how do you feel about the proposed pipeline?'

Ex Output:
weakener


Ex Input:
Premise: A man in a baseball tee-shirt is sweeping what appears to be an empty pond in a festive looking backyard.
Hypothesis: He's sweeping away dead leaves.
Update: The leafless trees surround the pond.

Ex Output:

strengthener