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, one with a bicycle, and a woman waiting to cross the road.
Hypothesis: The men are spies.
Update: The men have very high security clearances.
Example Output: strengthener

Example Input: Premise: A team prepares to play football.
Hypothesis: A team is running laps to warm up to play ball.
Update: The team is on a track.
Example Output: strengthener

Example Input: Premise: A dog jumping into a swimming pool.
Hypothesis: The dog is trying to get a ball his master put in the water.
Update: The man tells the dog to fetch
Example Output:
strengthener