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 dark-haired man in a striped shirt records a video of a gray-haired man using a MacBook laptop.
Hypothesis: The dark-haired man does not know the man who is using a laptop.
Update: The dark haired man asks the producer who the guy using the laptop is.

SOLUTION: strengthener

PROBLEM: Premise: A black and white dog is playing with a large brown cow.
Hypothesis: A dog is let loose on a farm and goes up to a cow wanting to play.
Update: The dog is excited and starts to pet the cow

SOLUTION: strengthener

PROBLEM: Premise: A group of people in silhouette play on a beach as the surf rolls in.
Hypothesis: A group of high school kids on spring break.
Update: The sun is setting for the first night of spring break.

SOLUTION:
strengthener