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: One man is singing into a microphone and another musician is playing the guitar while standing next to each other.
Hypothesis: The man played the guitar very well.
Update: The other members of the band stop playing and let the guitar player take over as the crowd cheers.

Ex Output:
strengthener


Ex Input:
Premise: Three street musicians wearing brown coats play the drums and trumpet in front of a store.
Hypothesis: three street musicians are playing jazz in front of a store.
Update: the musicians cover a country song

Ex Output:
weakener


Ex Input:
Premise: Two small brightly dressed African children with water bottles are sitting on a stone floor.
Hypothesis: Two kids are about to drink from the water bottles.
Update: The bottles were caked with dirt.

Ex Output:

weakener