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: Birds are fleeing a rock that has recently been splashed by heavy waves.
Hypothesis: Birds are moving away from a wet rock, while its cold outside.
Update: A boat with hunters on it splashed the waves

Ex Output:
weakener


Ex Input:
Premise: Three construction workers are standing outside and having a conversation.
Hypothesis: Construction workers are chatting during a break.
Update: The men have meals in their hands.

Ex Output:
strengthener


Ex Input:
Premise: A boy examines a black telescope.
Hypothesis: He is going to look at the stars.
Update: The boy is in full sunlight.

Ex Output:

weakener