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.

[EX Q]: Premise: A young boy in a black jacket is running towards a woman with outstretched arms.
Hypothesis: A young boy runs to his mother for a hug.
Update: The boy calls the woman 'Mommy'
[EX A]: strengthener

[EX Q]: Premise: A boy wearing a green shirt on a bicycle reflecting off a store window.
Hypothesis: The boy is stopped on his bike.
Update: The boy is talking to the store owner.
[EX A]: strengthener

[EX Q]: Premise: a skinny young man running with no shirt on
Hypothesis: The man is a teenager.
Update: The man is running in a high school gym.
[EX A]:
strengthener