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 long-sleeved white shirt and light tan shorts is mowing the lawn near a brick wall with small trees along it.
Hypothesis: a man mowes his lawn becuase it was to long
Update: It is impossible to tell what the man has already mowed from what is left to mow.

SOLUTION: weakener

PROBLEM: Premise: One guy skateboarding on a cement curb with his hands in the air.
Hypothesis: A guy is in a skating competition.
Update: The guy almost got hit by a passing car.

SOLUTION: weakener

PROBLEM: Premise: A man dressed in blue is wearing a backpack and shades.
Hypothesis: A man wearing only blue underwear, a backpack, and sunglasses.
Update: There is snow on the ground.

SOLUTION:
weakener