You are given a background paragraph that describes one or more causal or physical relationships, such as a relationship in economics, scientific law, or nature. You need to come up with a fictional story that makes use of the concepts or the relationship described in the provided paragraph. Make sure that your story does not repeat the relation in the given paragraph (e.g., by avoiding verbatim copies of the given paragraph). Start by reading the background paragraph, and determine what relationship(s) are in the paragraph. Write a story that involves the relationship(s) that you determined are in the background paragraph. Try to use your own words as much as possible and not repeat the background paragraph. Feel free to make up places and events as long as they tie back to the background paragraph in a way that you can ask a question about.

[Q]: Background Paragraph: Another example of negative feedback has to do with blood glucose levels. When glucose (sugar) levels in the blood are too high, the pancreas secretes insulin to stimulate the absorption of glucose and the conversion of glucose into glycogen, which is stored in the liver. As blood glucose levels decrease, less insulin is produced. When glucose levels are too low, another hormone called glucagon is produced, which causes the liver to convert glycogen back to glucose.
[A]: A doctor named Phil is researching how sugar affects the body. He noted when his participants ate a lot of sugar their livers would produce a lot more insulin than usual. The insulin would convert the sugar into glycogen. When they had a normal amount of sugar the amount of insulin was stable. He then had a person not eat at all and he found another hormone called glucagon was being produced. This hormone was converting the glycogen back into glucose, also known as sugar.

[Q]: Background Paragraph: There is an evolution in tennis training that employs the use of low compression balls and in some cases modified court sizes. Organizations around the world have begun to use lower compression balls and modified court sizes as a way to reach out to younger tennis players interested in tennis. The use of low compression balls and modified court sizes is meant to ease the process into becoming a competitive or amateur tennis player. The low compression balls are colored differently to indicate the level of compression. Young players and beginners are likely to find the game easier to learn because the balls do not bounce as high or travel as fast as "normal" balls. The modified smaller courts make covering the court, or reaching the opponents shot, easier as well.
[A]: Jordan and his brother William are going to a special school for learning tennis. When they arrive the instructor asks each of them what level they believe they are as players. William has attended tournaments in the past so he believes himself to be competitive. Jordan on the other hand is just learning so he says he is an amateur. The instructor then hands each of them a tube of tennis balls. William gets a tube of normal tennis balls. Jordan gets a tube of tennis balls that are colored slightly different and labeled "low compression". They practice side by side and Jordan notices that when he hits his tennis balls they do not bounce as high or as fast as Williams normal tennis balls. He ask William if he can try one of his and the balls bounce much higher and faster.

[Q]: Background Paragraph: Individuals living in large groups may be safer from attack because the predator may be confused by the large group size. As the group moves, the predator has greater difficulty targeting an individual prey animal. The zebra has been suggested by the zoologist Martin Stevens and his colleagues as an example of this. When stationary, a single zebra stands out because of its large size. To reduce the risk of attack, zebras often travel in herds. The striped patterns of all the zebras in the herd may confuse the predator, making it harder for the predator to focus in on an individual zebra. Furthermore, when moving rapidly, the zebra stripes create a confusing, flickering motion dazzle effect in the eye of the predator.
[A]:
Two packs of lions were hunting large herbivores. The Simba pack was ambushing wounded individual prey animals, while the Mobutu pack followed large groups of zebras and other grazers.