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.

Input: Consider Input: Premise: Two men are climbing up a steep rock face with moss growing out of it.
Hypothesis: Two men are climbing up a steep rock face to meet someone.
Update: They are leading the way in a rock climbing competition.

Output: weakener


Input: Consider Input: Premise: A man in yellow rain gear on a boat
Hypothesis: A man is getting soaked on the boat.
Update: The man wipes his face with a towel.

Output: strengthener


Input: Consider Input: Premise: A little girl dances in a room with balloons on the floor.
Hypothesis: a girl is having a good time dancing
Update: She looks sad, and there is nobody else in the room.


Output: weakener