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 toddler in a pool using a green floating tube.
Hypothesis: The toddler is learning to swim.
Update: The toddler holds onto Mom.

Ex Output:
strengthener


Ex Input:
Premise: People in blue t-shirts stand in the grass.
Hypothesis: People in blue t-shirts stand around talking about their lives.
Update: They are looking at pictures of one another's vacations on their smartphones.

Ex Output:
strengthener


Ex Input:
Premise: A lady with a scooter sits on the side of the sidewalk.
Hypothesis: A lady sits on a city sidewalk.
Update: The lady is sitting on her scooter.

Ex Output:

weakener