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: Children climbing an old tree in front of a brick building.
Hypothesis: Children are climbing an old tree in front of the school.
Update: The library in the area has been around for many years.
strengthener

Premise: Three people in white clothes observe graffiti on the side of a building.
Hypothesis: The people in white are going to paint over the graffiti.
Update: the people take out cameras and take photos
weakener

Premise: A photographer's camera is peeking out from rocks along a rocky coastline.
Hypothesis: A photographer's camera can be seen from.
Update: The camera is the same color as the rocks.

weakener