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: Young girl in pink T-shirt and black leggings tosses blue football in grassy open area.
Hypothesis: The girl is playing with the ball at the park.
Update: In the distance are kids on swings and people walking their dogs.
strengthener

Premise: A small group of people are in a small red boat and it is in the air over the ocean.
Hypothesis: The people in the boat are being rescued.
Update: The people haven't eaten for five days.
strengthener

Premise: Group of hikers on top a snowy mountain during a storm.
Hypothesis: A group of friends hiking on a steep mountain.
Update: They are barely visible.

strengthener