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 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.

Ex Output:
strengthener


Ex Input:
Premise: A woman with red-hair and a black hat is standing in front of pictures.
Hypothesis: The woman wearing the black hat has red hair.
Update: The woman dyes her hair.

Ex Output:
weakener


Ex Input:
Premise: The tourists are out on the river in Italy, the man in the black and white striped shirt will tell them about the seine.
Hypothesis: The tourists are taking photos.
Update: The tourists are all empty-handed.

Ex Output:

weakener