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: Several people with their arms around one another at a celebration.
Hypothesis: A bunch of people celebrating
Update: They are wearing security uniforms and are standing in front of the stage.

Ex Output:
weakener


Ex Input:
Premise: A dog in the snow.
Hypothesis: The puppy is frolicking in the snow.
Update: the dog has been with his owner for many years

Ex Output:
weakener


Ex Input:
Premise: Two women and two small girls are looking over books in a library.
Hypothesis: Four people are in a public library.
Update: The library is almost dead because it is closing time.

Ex Output:

strengthener