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 group of people appear to be tilling the ground in front of a couple of thatch roof huts.
Hypothesis: The people are going to plant a garden.
Update: But they are actually making a place for the water to run off when it rains.
Example Output: weakener

Example Input: Premise: a woman wearing a neon jacket standing next to a large machine.
Hypothesis: The woman knows how to work the machine.
Update: The woman is considering adjustments to make the machine run more smoothly.
Example Output: strengthener

Example Input: Premise: A crowd of people surround a fender bender.
Hypothesis: There are two cars
Update: The crash is blocking four lanes of a highway.
Example Output:
weakener