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: Firefighters climbing past a tree.
Hypothesis: Firefighters are climbing to put out a fire on a tall building
Update: The firefighters are going up an extended ladder.

Ex Output:
strengthener


Ex Input:
Premise: A young red-haired woman uses a scope to scout out shooting targets on a gun range.
Hypothesis: The woman is shooting with other people at the range
Update: The woman is surrounded by other people with guns

Ex Output:
strengthener


Ex Input:
Premise: A man eats food on a table in front of a small food shop on the street while a passerby walks by.
Hypothesis: A man eats his dinner at a small restaurant because he didn't feel like cooking that night.
Update: It is evening.

Ex Output:

strengthener