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 girl in an aqua tank top is watching a man in a blue tank top and shorts wash the window.
Hypothesis: The girl has a crush on the man washing windows.
Update: The girl has watched him for half an hour

SOLUTION: strengthener

PROBLEM: Premise: Children sit in a classroom holding slates.
Hypothesis: The children are praticing math.
Update: The children are drawing pictures.

SOLUTION: weakener

PROBLEM: Premise: One in a blue shirt using his cellphone, and one man looking away, sitting outside a building.
Hypothesis: The men are on a work break
Update: They're waiting for their boss to unlock the door so they can begin working.

SOLUTION:
weakener