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: Four adults eat while sitting on a tile floor.
Hypothesis: Two couples eat food on a kitchen floor.
Update: The people are on a double date.
strengthener

Premise: Men and women outside holding hands to form circles.
Hypothesis: Some people are holding hands and singing.
Update: A banner behind them reads 'Meditation class'
weakener

Premise: A woman with brown hair is being lifted from her brown seat after being dunked in the water, with people looking on.
Hypothesis: a woman is doing this event for a fund raiser
Update: Some manually punched the lever as a joke.

weakener