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 diver swims past a school of colorful fish.
Hypothesis: The diver is a scientist studying fish.
Update: The diver has a camera and notes.
Example Output: strengthener

Example Input: Premise: A father with a red shirt and beard is cuddling with his two children in a chair.
Hypothesis: There are three people inside.
Update: They are sitting on the front porch.
Example Output:
strengthener