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: A man in a blue shirt is speaking to a group of people in front of a building.
Hypothesis: The man is giving a speech about an important topic.
Update: He is telling the new tenants where their room is.
Example Output: weakener

Example Input: Premise: A man is standing on a small floating raft with a flag.
Hypothesis: The man is a survivor of a shipwreck.
Update: He has supplies with him
Example Output: strengthener

Example Input: Premise: A man in a black pirate shirt relaxing on an ornate red and gold couch.
Hypothesis: The retired pirate relaxes on his stolen furniture.
Update: A policeman is coming up the walk.
Example Output:
strengthener