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: People hurrying to get to work in a busy city.
Hypothesis: People waiting at a bus stop.
Update: The people wait on the sidewalk as a bus pulls up by them.
Example Output: strengthener

Example Input: Premise: This man is wearing a red helmet and flip-flops and driving a Spyder.
Hypothesis: A man driving a car to a dealer to have it tuned up.
Update: The man's Spyder glides down the road.
Example Output: weakener

Example Input: Premise: Two men are standing outdoors on a sunny day holding pieces of a new item, possibly a small grill, while one of the men studies the assembly instructions.
Hypothesis: A man stands beside a new box of grill machine and tries to figure how to assemble it by reading through the manual
Update: A man stands beside a new box of grill machine, with a tray of raw meats, and tries to figure how to assemble it by reading through the manual.
Example Output:
strengthener