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 and a woman that is holding flowers smile in the sunlight.
Hypothesis: A couple smile on the bench.
Update: The sound of the ocean can be heard.
Example Output: strengthener

Example Input: Premise: A red PlNe is flying by the queen Elisabeth 2 shooting out red smoke.
Hypothesis: A plane is about to go down.
Update: There are bombs flying all around in the air.
Example Output: strengthener

Example Input: Premise: Three children playing on the sidewalk with big bubbles.
Hypothesis: Children enjoying summer.
Update: Autumn leaves cover the lawn.
Example Output:
weakener