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: People working on their computers and papers.
Hypothesis: There are people working on a broken computer
Update: People are taking a test in a classroom.
Example Output: weakener

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: A group of people looking at a woman wearing a white dress.
Hypothesis: the boy was listening
Update: The boy thought the woman was going to sing a song.
Example Output:
strengthener