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: Two people walking by a large stone wall.
Hypothesis: A lesbian couple is walking beside a wall.
Update: The two people are holding hands.
strengthener

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.
strengthener

Premise: Two men in football uniforms sit on the grass, looking unhappy.
Hypothesis: Two men unhappy after losing a game.
Update: The opposing team is cheering and celebrating on the field

strengthener