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: Two blond women are smiling while one is holding a camera to capture their image.
Hypothesis: Two women taking a selfie on the beach.
Update: The women are wearing bikinis.

SOLUTION: strengthener

PROBLEM: Premise: The soil they walk on looks very dry.
Hypothesis: The sun is out.
Update: The sun shines intensely onto the ground.

SOLUTION:
strengthener