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: A young boy in checkered pants places a red shirt in a black tub.
Hypothesis: A little boy puts a red shirt in a black tub for charity while he's wearing checkered pants.
Update: The kid is alone.

SOLUTION: strengthener

PROBLEM: Premise: Little boy in black jacket, kicking leaves.
Hypothesis: A child is happily playing in the leaves.
Update: His face is sullen.

SOLUTION: weakener

PROBLEM: Premise: A woman shows a man something on her cellphone in the middle of a crowded street.
Hypothesis: A woman and a man are taking pictures of others.
Update: The phone's camera is pointed at the sidewalk.

SOLUTION:
strengthener