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.

Q: Premise: Two little girls reading and a baby listening.
Hypothesis: The baby is the girl's sibling.
Update: They are sitting on a living room floor, surrounded by their toys.

A: strengthener
****
Q: 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.

A: strengthener
****
Q: Premise: A dog pulls at the sleeve of a man in a leather coat.
Hypothesis: The dog is playful.
Update: The man is holding food.

A:
weakener
****