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 blond boy in a blue t-shirt stands smiling before a craft of green nylon fabric.
Hypothesis: A boy is happy about his fabric choice.
Update: The boy's favorite color is green.

SOLUTION: strengthener

PROBLEM: Premise: A man is moving a gate that impedes the progress of an oncoming train.
Hypothesis: The railroad worker is completing his last task for the day.
Update: The worker is very tired.

SOLUTION: strengthener

PROBLEM: Premise: Two boys are looking upwards with their arms streteched to the sky, the boy on the left is wearing a blue vest jacket with a gray long-sleeved shirt and black jogging pants, and black tennis shoes and a hat, and the boy on the right is wearing a silver vest jacket, with blue long-sleeved undershirt, gray pants, and black tennis shoes and has black short hair and glasses.
Hypothesis: Children are playing outside.
Update: One child has grass stains on their pants.

SOLUTION:
strengthener

