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.

Example Input: Premise: Young punk rock guitarist, wearing a red lined jacket with a badge, is in front of foggy blue and purple lighting.
Hypothesis: The new popular guitarist stands in front of lighting at his new show
Update: The guitarist is nervous
Example Output: strengthener

Example Input: Premise: A man is driving a white van sprayed painted with graffiti.
Hypothesis: A man is driving away from some cops.
Update: The man forgot his wallet at work.
Example Output: weakener

Example Input: Premise: Time-lapse of a female toddler playing in a living room.
Hypothesis: A toddler is playing with dolls.
Update: A dog is circling and chasing the girl around
Example Output:
weakener