You are given a background paragraph that describes one or more causal or qualitative relationships such as a relationship in economics or a scientific law and a story that makes use of the concepts or the relationship described in the provided paragraph. You need to come up with a question about the story that requires an understanding of the relationship described in the background paragraph. The generated question should not be answerable without both the background and story. Write a question about the story that requires a relationship in the background paragraph to answer. Check whether your question requires both the background paragraph and the story to answer. If your question can be answered by only one of these, try to rewrite your question so that it requires both. Note that "flipping" a word in the question can give rise to a new question where the answer will be different from the original question. Often, "flipping" a word gives rise to flipping the direction of the relationship, for example, from "increase" to "decrease."

[Q]: Background Paragraph: Hypertension , which is also called "high blood pressure," occurs when a person’s blood pressure is always high. Hypertension is said to be present when a person's systolic blood pressure is always 140 or higher, and/or if the person's diastolic blood pressure is always 90 or higher. Having hypertension increases a person’s chance for developing heart disease, having a stroke, or suffering from other serious cardiovascular diseases. Hypertension often does not have any symptoms, so a person may not know that he or she has high blood pressure. For this reason, hypertension is often called the "silent killer." Treatments for hypertension include diet changes, exercise, and medication. Foods thought to lower blood pressure include skim milk, spinach, beans, bananas and dark chocolate. 
Story: Bill and Bob were two brothers. They were both pretty active, but Bill loved salty foods and red wine. He got dizzy one day and went to the doctor. Bill had hypertension. Bob, on the other hand was hypotensive.
[A]: Which brother didn't have a diastolic blood pressure always always 90 or higher?


[Q]: Background Paragraph: Storing large volumes of data – When storing XML to either file or database, the volume of data a system produces can often exceed reasonable limits, with a number of detriments: the access times go up as more data is read, CPU load goes up as XML data takes more power to process, and storage costs go up. By storing XML data in Fast Infoset format, data volume may be reduced by as much as 80 percent. 
Story: Eliseo had a busy day storing XML. In the morning, he filled up many hard drives with XML. In the afternoon, he filled up a few hard drives with XML. At night, he filled up a hard drive with XML.
[A]: What time did storage costs go up the least: morning or afternoon?


[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. 
Story: 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.
[A]:
Given the same amount of force, will hitting a low compression tennis ball bounce lower of higher than a normal tennis ball.?