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 man in a blue shirt is pushing another man in a white shirt during football practice.
Hypothesis: The offensive man is blocking the defense.
Update: The offensive man is blocking the exit from the football field.

SOLUTION: weakener

PROBLEM: Premise: The Irish Setter is retrieving a flashlight from the pond.
Hypothesis: A dog is fetching something for its owner.
Update: Behind the dog are a few police cars with their lights on.

SOLUTION: weakener

PROBLEM: Premise: Two people standing in front of vine covered wall with red flower overhead
Hypothesis: People are standing by a wall for photographs.
Update: The people are staring at a camera.

SOLUTION:
strengthener