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: Man on bike in mountains
Hypothesis: A tall human on bike
Update: The man has to crouch down to steer through the mountains.
Example Output: strengthener

Example Input: Premise: There are three people on the dock by the boats.
Hypothesis: Three people prepare for a fishing trip.
Update: The people are wearing search and rescue gear
Example Output: weakener

Example Input: Premise: The man is flipping over the bar.
Hypothesis: a man on a bar is drunk
Update: The man just arrived at the bar.
Example Output:
weakener