TASK DEFINITION: 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.
PROBLEM: 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.

SOLUTION: strengthener

PROBLEM: Premise: An elderly woman sitting in the window of a stone building
Hypothesis: A woman relaxing after a long day of cleaning.
Update: A mop sits nearby in a bucket.

SOLUTION: strengthener

PROBLEM: Premise: One woman with jeans, gray shirt and sandals; with girl in all pink watching a white ball float in midair.
Hypothesis: The woman is contemplating buying a new outfit.
Update: The woman was shopping on her phone.

SOLUTION:
strengthener