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: Two people are standing next to a waterway canal.
Hypothesis: People walk along the canal
Update: someone is pointing a camera at them.
Example Output: weakener

Example Input: Premise: Several people are dividing up painting supplies.
Hypothesis: men and women dividing supplies
Update: Some of the people have breasts, and some have beards.
Example Output: strengthener

Example Input: Premise: Three men are working with their bikes in the shoulder of a road.
Hypothesis: The men are talking to each other on the side of the rode about their wives.
Update: They are planning a group vacation with all the families coming.
Example Output:
strengthener