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: Two men are sitting with their mouths wide open.
Hypothesis: Two men are having a conversation.
Update: The men are at the dentist.
Example Output: weakener

Example Input: Premise: A child in a red shirt is sitting against a wall with a map while eating.
Hypothesis: The child is eating an apple.
Update: Crumbs fall in his lap.
Example Output: weakener

Example Input: Premise: A man holding onto a jungle gym ladder.
Hypothesis: A man is holding the ladder of a jungle gym while his daughter climbs up it.
Update: The man is looking upwards with a concerned look on his face
Example Output:
strengthener