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.

Premise: Firefighters climbing past a tree.
Hypothesis: Firefighters are climbing to put out a fire on a tall building
Update: The firefighters are going up an extended ladder.
strengthener

Premise: A blond woman in a beige hat and black shirt, looks behind her, smiling at the camera, with a group of other people talking in the background on a street.
Hypothesis: A young blond woman in a hat and shirt is smiling at the camera while a group of journalists takes her picture and chatter behind her.
Update: The woman is at Disneyland.
weakener

Premise: This man is demonstrating unique dancing.
Hypothesis: An old man is dancing in a unique fashion.
Update: The man is has grey hair while also moving pretty slow.

strengthener