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: Two football teams lined up before the hike.
Hypothesis: Two football teams line up during the superbowl for the hike.
Update: Ad time at the event is absurdly expensive.
Example Output: strengthener

Example Input: Premise: A man is sweeping a tile floor with a broom.
Hypothesis: The man is sweeping up the floor in his kitchen.
Update: There are toilets in the room.
Example Output: weakener

Example Input: Premise: A young boy in a baseball cap jumps into the arms of a man wearing a blue shirt.
Hypothesis: The boy jumps into his father's arms.
Update: The man is a little league coach.
Example Output:
weakener