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: 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 dressed in a white dress and holding a bouquet of pink roses, placing a rose stem on the lapel of a man dressed in a dark blue dinner jacket and white tie.
Hypothesis: The woman was out with her husband on a special date.
Update: The people are at a wedding.

SOLUTION: weakener

PROBLEM: Premise: A man in a red shirt and camouflage shorts is outside grilling.
Hypothesis: A man is grilling food for a large Fourth of July party he is having in his backyard.
Update: A small child was waving a sparkler.

SOLUTION:
strengthener