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: A toddler in a pool using a green floating tube.
Hypothesis: The toddler is learning to swim.
Update: The toddler holds onto Mom.
Example Output: strengthener

Example Input: Premise: An all-female band plays drums and guitar on a stage, in front of a banner reading "Screaming Orphans."
Hypothesis: The band name is "Screaming Orphans"
Update: The band is playing for free for charity.
Example Output: weakener

Example Input: Premise: The two people wearing green are sitting down and surrounded by empty seats.
Hypothesis: There are people sitting outdoors
Update: The sun is shining on them.
Example Output:
strengthener