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: Hippies blow bubbles at a festival.
Hypothesis: The people are enjoying themselves.
Update: People are pushing, shoving and tripping over each other.

Output: weakener


Input: Consider Input: Premise: A child in a red shirt is sitting against a wall with a map while eating.
Hypothesis: The child is eating an apple.
Update: Crumbs fall in his lap.

Output: weakener


Input: Consider Input: Premise: A man watches the waves from the ship deck as he ties a rope.
Hypothesis: A sailor is mooring a boat.
Update: The sailor is tying up to a wharf.


Output: strengthener