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 Input:
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 Output:
strengthener


Ex Input:
Premise: A young boy in red swim shorts playing with sand on a beach.
Hypothesis: A boy is building a sandcastle.
Update: He uses a shovel to dig a moat.

Ex Output:
strengthener


Ex Input:
Premise: A couple lying in the grass, one relaxing and the other writing in her notebook.
Hypothesis: A couple laying together in the grass underneath a tree as the woman writes in her diary.
Update: Leaves are scattered in the grass.

Ex Output:

strengthener