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: People hurrying to get to work in a busy city.
Hypothesis: People waiting at a bus stop.
Update: The people wait on the sidewalk as a bus pulls up by them.

SOLUTION: strengthener

PROBLEM: Premise: This is a painting of a group of people playing string instruments in a old building with many shiny glowing chandeliers.
Hypothesis: The painting shows the group of people in a very positive image.
Update: In the painting some of the people are frowning.

SOLUTION: weakener

PROBLEM: Premise: Man in black hat teaching another man tennis on a fenced in tennis court.
Hypothesis: A coach is preparing his student for a tennis match.
Update: The court is separated by a large net.

SOLUTION:
strengthener