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.

Premise: A woman concentrates on the device in her hand in the midst of a crowded establishment all lit in purple.
Hypothesis: a woman doing work in a crowd
Update: A woman wears a security jacket.
strengthener

Premise: A large crowd standing in front of a very large painting.
Hypothesis: A crowd is looking at a painting.
Update: The crowd is paying attention to a mime that is performing in front of the painting.
weakener

Premise: At a rock concert a man dressed in black and white pants and a checked hat plays his red guitar while another man sings.
Hypothesis: The man is a good singer.
Update: This is a community talent show

weakener