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 girls volleyball team practices.
Hypothesis: The volleyball team is preparing for their tournament.
Update: There are no other volleyball teams in the state.

Ex Output:
weakener


Ex Input:
Premise: A man wearing black gloves is placing some food items out to be sold.
Hypothesis: A man selling food works for a restuarant.
Update: He is wearing a chef's hat.

Ex Output:
strengthener


Ex Input:
Premise: A man wearing sunglasses, a black shirt and gray jeans is playing guitar on stage with a band.
Hypothesis: The man is trying out for the band at a live performance.
Update: The man is very nervous.

Ex Output:

strengthener