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 little blond girl sitting on the floor looks up.
Hypothesis: The little girl looks up at her father.
Update: A person hands her lollipop.

SOLUTION: strengthener

PROBLEM: Premise: Many people are walking or standing on a busy city sidewalk.
Hypothesis: An angry mob discussing how to storm a building.
Update: They are outside a business that was running a scam and want their money back.

SOLUTION: strengthener

PROBLEM: Premise: A man grasping a white sheet of paper sits next to the harbor.
Hypothesis: A man is reading a letter next to the harbor.
Update: The piece of paper has writing on it that begins with "Dear John."

SOLUTION:
strengthener