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 diver swims past a school of colorful fish.
Hypothesis: The diver is a scientist studying fish.
Update: The diver has a camera and notes.
strengthener

Premise: A man wearing all black plays a coffee-burst bass guitar with a band.
Hypothesis: A man is playing with his band in a garage.
Update: There are many onlookers seated in the audience.
weakener

Premise: In an urban area, people act out their daily lives walking, eating, and enjoying company.
Hypothesis: During a bright sunny day in an urban, people are out living their daily lives.
Update: the sun is shining and it is very warm

strengthener