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 man preparing his net for fishing.
Hypothesis: A young man fixes holes in a net before fishing for bait fish.
Update: The man's face is wrinkled.

Ex Output:
weakener


Ex Input:
Premise: A person in black glasses takes a drink from a shot glass.
Hypothesis: A person drinks whiskey in the early evening after a day of hard work.
Update: the man asks for another the bartender grabs a bottle of whiskey while the man puts his briefcase down

Ex Output:
strengthener


Ex Input:
Premise: Two brown dogs playing in water
Hypothesis: the dogs are having fun
Update: The dogs have been playing in the water for 15 minutes.

Ex Output:

strengthener