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: A couple kissing on the neck on a busy street.
Hypothesis: The couple is male and female.
Update: The two people kissing are David and Emily.

A: strengthener
****
Q: Premise: A young boy slides down a blue slide with his eyes closed while a woman with sunglasses watches, smiling.
Hypothesis: A young boy slides down a blue slide with his eyes closed because he is scared that the woman will not catch him at the bottom.
Update: Last time he hit the ground hard.

A: strengthener
****
Q: Premise: A man is browsing things for sale on the street.
Hypothesis: A sad man is browsing things for sale on the street.
Update: The man just got divorced.

A:
strengthener
****