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: Men walking on the scaffolding of a building.
Hypothesis: A male construction worker making his way toward a damaged piece of scaffolding at the edge of a building.
Update: The man is fixing up the washroom

SOLUTION: weakener

PROBLEM: Premise: An enthusiastic young man runs with an exercise ball as he's being chased.
Hypothesis: A man and his friend is playing catch.
Update: The man throws the ball back to his friend.

SOLUTION: strengthener

PROBLEM: Premise: A woman wearing goggles is using a blowtorch.
Hypothesis: Welder repairing a boat.
Update: Someone has lost the key to their safe.

SOLUTION:
weakener