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: The sky appears clear.
Hypothesis: The sky looked very clear at night.
Update: Many stars are visible.

SOLUTION: strengthener

PROBLEM: Premise: The bride is standing outside.
Hypothesis: The bride is about to walk down the aisle in her outdoor wedding.
Update: The bride's hair and makeup aren't done.

SOLUTION: weakener

PROBLEM: Premise: Little boy is sleeping on a brown sofa.
Hypothesis: Little boy is sleeping on a brown sofa after taking a bath.
Update: He smells of soap and has on clean pajamas.

SOLUTION:
strengthener