In this task, you're given an article and an answer. Your task is to generate the question for the answer based on the given article.

Ex Input:
Article: Pepito the Brave By Scott Beck, Dutton, ISBN 0-525-46524-3, $12.99 Ah, the time in life when one has to leave home. No one seems to have as hard a time with it as Pepito. Pepito is a little bird who needs to leave the nest, but the problems is, he's afraid of heights. This makes flying away a bit of a problem, so like most people (or birds in this case) he avoids it, when he finds himself in a new situation, someone happens to give him some advice. A fox suggests he run to where he's going (I got nervous when he came across a fox, _ , a frog tells him to hop, a gopher to burrow . After his various attempts not to fly, he makes it to his brothers' and sister's new tree, and realizes that what he's done is much harder than actually trying to fly. It's a charming story with a good message--often facing up to our fears is much easier than running from them. The Stray Dog By Marc Simont, HarperCollins, ISBN 0-06-028933-3, $15.95 As someone who has taken in his share of stray animals, I can totally relate to the family in The Stray Dog. While picnicking one day, they befriend a dog that wanders by. Everyone immediately falls in love, but they leave him behind, figuring he belongs to someone else. But as the week goes by, none of them can get the dog, which they've named Willy, off their mind. So naturally the next Saturday they go back to that same place to see if Willy's still there. They find that not only does he not have an owner, but they've arrived just in time to prevent a catastrophe. Kids who love animals will definitely _ in the action, and even those who don't will appreciate the quick thinking children who save the day.
Answer: They are for people who have pets.

Ex Output:
Who are these two books written for?

Ex Input:
Article: Metro Pocket Guide Metrorail Each passenger needs a farecard to enter and go out. Up to two children under ago five may travel free with a paying customer. Farecard machine are in every station, Bring small bills because there are no change machines in the station and farecard machine only provide up to $ 5 in change. Get one of unlimited Metrorail rides with a One Day Pass. Buy it from a farecard machine in Metro stations. Use it after 9:30 a. m. until closing on weekdays, and all day on weekends and holidays. Hours of Service Open: 5 a. m Mon-Fri 7a. m. Sat--Sun . Close: midnight Sun--Thurs 3 a.m. Fri.---Sat. nights. Last train times vary. To avoid missing the last train, please check the last train times posted in the station. Metrobus When paying with exact change, the fare is $ 1. 35 . when paying with a smarTrip card, the fare is $1. 25 Fares for the Senior /disabled customers Senior citizens 65 and older and disabled customers may ride for half the regular fare. On Metrorail and Metrobus, use a senior/disabled farecard or SmarTrip card. For more information about buying senior/disabled farecards, farecard or SmarTrip cards and passes, please visit MetroOpenDoors. com or call 202-637-7000 and 202-637-8000. Senior citizens and disabled customers can get free guide on how to use proper Metrobus and Metrorail services by calling 202-962-1100 Travel tips . Avoid riding during weekday rush periods -before 9:30 a. m. and between 4 and 6 p. m. . If you lose something on a bus or train or in a station, please call Lost & Found at 202-962-1195.
Answer: They make change for no more than $5.

Ex Output:
What should you know about farecard machine?

Ex Input:
Article: Besides containing attractive flowers, trees and other plants that beautify the community, eco-friendly rain gardens are healthy for the environment and the people living and working nearby. A rain garden is not very different from a traditional garden. It is just a far more eco-friendly garden. Usually it is built lower than the ground. Rain gardens make smart use of rain and storm water by temporarily holding water from rain and storms and letting it soak slowly into the ground before it runs into streams or enters the public drinking water supply. Thus, a rain garden keeps the water, allowing it to be used as needed by plants in the rain garden, rather than flowing immediately into nearby streams and going unused. The water will soak slowly into the ground within a day or two. This creates an advantage that the rain garden does not allow mosquitoes to breed. This is a simple, attractive, and eco-friendly "green" way to treat storm water. What's more, planting a rain garden helps reduce pollution and improve the environment. Without using expensive machinery and chemicals, rain gardens remove harmful chemicals in the rainwater and cut down on the amount of pollution reaching streams and rivers by up to 30%. Native plants are recommended for rain gardens because they are more used to the locals climate, soil, and water conditions. They may attract local wildlife such as native birds. Water your rain garden immediately after planting and once a week, unless you have had at least an inch of rain during the week. Once the native plants establish the necessary root system, it will require little care. Often, local governments and private businesses develop large rain gardens in their yards and in public parks as a way to improve the environment and solve flooding problems. However, you don't need to be a professional environmental engineer to create a rain garden. As long as you're eco-conscious homeowners, you can help the environment by building smaller rain gardens in your yards.
Answer: They increase pollution.

Ex Output:
Which of the following is NOT RIGHT for the function of rain gardens?