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."

Ex Input:
Background Paragraph: Like water in the ocean, air in the atmosphere exerts pressure that increases with depth. Most gas molecules in the atmosphere are pulled close to Earth’s surface by gravity. As a result, air pressure decreases quickly at lower altitudes and then more slowly at higher altitudes. This is illustrated in Figure below . Air pressure is greatest at sea level, where the depth of the atmosphere is greatest. At higher altitudes, the pressure is less because the depth of the atmosphere is less. For example, on top of Mount Everest, the tallest mountain on Earth, air pressure is only about one-third of the pressure at sea level. At such high altitudes, low air pressure makes it hard to breathe and is dangerous to human health. 
Story: There are two neighboring cities, Brampton and Filtroy. The two towns depend on each other by trading supplies and goods regularly. Filtroy is located on top of a very tall mountain, and Brampton is situated at the base of this hill. For this reason, it can sometimes be difficult to traverse the roads to trade goods, but it's important to do it so both cities can thrive.

Ex Output:
In which city is it easier for citizens to breathe?


Ex Input:
Background Paragraph: When you go to the dentist to get a tooth pulled, you really don’t want to feel any pain. The dentist injects an anesthetic into your gum and it eventually becomes numb. One theory as to why anesthetics work deals with the movement of ions across the cell membrane. The anesthetic gets into the membrane structure and causes shifts in how ions move across the membrane. If ion movement is disrupted, nerve impulses will not be transmitted and you will not sense pain – at least not until the anesthetic wears off. 
Story: Two men, Sam and Frodo, go into the doctor's office to have the exact same procedure done to one of their arms. They won't need to be knocked out for this, but they will be given anesthetic to help with the pain. After the nurse administers the anesthetic to both men, the ions in Sam's arm continue moving across the membrane, but the ions in Frodo's arm stop moving. The doctor then comes in to begin the procedure.

Ex Output:
Which man's nerve impulses are being transmitted?


Ex Input:
Background Paragraph: Old age begins in the mid-60s and lasts until the end of life. Most people over 65 have retired from work, freeing up their time for hobbies, grandchildren, and other interests. Stamina, strength, reflex time, and the senses all decline during old age, and the number of brain cells decreases as well. The immune system becomes less efficient, increasing the risk of serious illnesses such as cancer and pneumonia. Diseases such as Alzheimer’s disease that cause loss of mental function also become more common. 
Story: Two groups of people participated in a geriatrics study. group D had people over 65 years old, while group Y had people in their 40's in its composition.

Ex Output:

Which group had people at greater risk of developing cancer?


