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 is driving a white van sprayed painted with graffiti.
Hypothesis: A man is driving away from some cops.
Update: The man forgot his wallet at work.

SOLUTION: weakener

PROBLEM: Premise: Two people walking by a large stone wall.
Hypothesis: A lesbian couple is walking beside a wall.
Update: The two people are holding hands.

SOLUTION: strengthener

PROBLEM: Premise: Several people stand in line at what appears to be a park for a water fountain, vendor, lavatory or something of the sort.
Hypothesis: Several people are waiting for their turn in the bathroom.
Update: One guy is holding is stomach

SOLUTION:
strengthener