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.

Example input: Article: There are a lot of public libraries in Britain. These libraries have more than one hundred and fifteen million books, not including those libraries of public schools. Public libraries not only lend books, music records but also help children, patients in hospitals and others to get special play readings, film shows and so on. The first public libraries were founded in about the year 1850. Today's public libraries usually have a reading-room, a lending room and a reference room. The greatest and most famous library in Britain is that of the British Library in London. It was founded in 1973 and has over 10, 000, 000 books. It has nearly every magazine, newspaper and book published in Britain and other parts across the world.
Answer: 10,000,000 or less.
Example output: How many books are there in the British Library?
Example explanation: In the Article, 10,000,000 is mentioned for the number of books available in the British Library, so this is a good question.
Q: Article: The price of gas has been going up. We do not know when it will end. Many people want to know how they can save fuel . The best way to save fuel is to change driving habits. The accelerator , or gas pedal,has a lot to do with how much gas you use.The faster you drive, the more gas you use. Drivers should slow down a bit to save fuel. Driving at a steady speed helps to save much gas you use.Accelerating slowly to get to the speed you want helps save gas, too. The more you drive your car.the more gas you use.Think about the places you need to go before leaving your home. _ ) that you need to do as you can in one trip.Always try to pick the shortest route when going somewhere. Cars that are in good working condition use less fuel. Take care of your car. Make sure the engine is running well and is tuned-up often. Have a mechanic check if something seems wrong. Tires are important, too. Keep the tires inflated properly on a car. It will help the car roll better. If a car's tires are worn, then they should be replaced. Finally,think about using your car less.Walk or ride a bike if you do not have to go far.Carpool or take public transportation when you can.Leaving your car at home really saves gas.
Answer: Drive at a speed that is seldom changed.
A:
Which of the following can help save much oil?