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: A girl jumps rope on a sidewalk.
Hypothesis: A young girl is jumping rope on a sidewalk near school.
Update: Her mother calls her inside to have supper.

Ex Output:
weakener


Ex Input:
Premise: Outside by the trees, a woman wearing jeans and red jacket throws something for a German shepherd to chase.
Hypothesis: A young lady is teaching her pet dog how to play fetch.
Update: The woman is the wife of a K-9 officer

Ex Output:
strengthener


Ex Input:
Premise: Two people are walking around in a busy street.
Hypothesis: two people walk to work
Update: They are carrying briefcases.

Ex Output:

strengthener