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 young girl sits on the edge of a sink.
Hypothesis: a girl poses for her mother
Update: The girl's mother is holding a camera.

SOLUTION: strengthener

PROBLEM: Premise: A young girl wearing a yellow soccer jersey is running on a field.
Hypothesis: A girl is running to chase a soccer ball during a game.
Update: The field is full of children in street clothes.

SOLUTION: weakener

PROBLEM: Premise: A boy in a red shirt stands on a mountain.
Hypothesis: A boy has climbed the mountain, but wants to go down.
Update: The boy's partner is still helping him up through the mountain.

SOLUTION:
weakener