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.

Ex 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.

Ex Output:
weakener


Ex Input:
Premise: A person is writing on a chalkboard in a empty classroom.
Hypothesis: A man is doing math on a chalkboard.
Update: the person is a talented drawer.

Ex Output:
weakener


Ex Input:
Premise: a man with black hair pushes a large machine in a swampy watery area.
Hypothesis: A man is on a boat with friends.
Update: The man is a tour guide

Ex Output:

weakener