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: Four dark-haired girls walk the hall toward a bank of lockers.
Hypothesis: Girls are at the gym.
Update: They are between classes.

SOLUTION: weakener

PROBLEM: Premise: Three boys in t-shirt standing outside of a dilapidated building.
Hypothesis: They used to live in the building.
Update: A woman stands in a doorway motioning for the boys to come to dinner.

SOLUTION: weakener

PROBLEM: Premise: A male bike rider wearing a neon yellow shirt with the number "52", and black bike shorts, is turning a corner on the road while other bikers follow in the background.
Hypothesis: A cyclist leading the pack in a bike race.
Update: People are taking pictures of the man

SOLUTION:
strengthener