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.
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Question: 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.

Answer: strengthener


Question: Premise: A dark-haired man in a striped shirt records a video of a gray-haired man using a MacBook laptop.
Hypothesis: The dark-haired man does not know the man who is using a laptop.
Update: The dark haired man asks the producer who the guy using the laptop is.

Answer: strengthener


Question: Premise: A man in a complicated costume with a red mask is holding a torch in front of a crowd of people, many of whom have cameras.
Hypothesis: A man dressed as the devil is having his picture taken.
Update: The man is also wearing horns and a tail.

Answer:
strengthener