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.

Input: Consider Input: Article: Although man has known asbestos for hundreds of years, it was not until 160 years ago that it was mined for the first time on the North American continent. H.W.Johns, owner of a New York City Supply Shop for roofers,was responsible for the opening of that first mine. Mr. Johns was given a piece of asbestos which had been found in Italy. He experimented with the material and then showed its surprising powers to his customers. After putting on a pair of asbestos gloves,which looked much like ordinary work gloves,he took red-hot coals from the fireplace and played with them in his hands. How astonished the customers were to discover that he was not burned at all. You can well imagine that he had increased business in asbestos roofing materials. However,because it was very expensive to transport them from Italy to the United States, Mr. Johns sent out a young scientist to seek a source nearer home. This young man found great vein, in the province of Quebec in Canada. Ever since 1881 Quebec has led the world in the production of this unusual mineral,which is made up of magnesium, silicon, iron, and oxygen. When it is mined, the asbestos is heavy, just as you would expect a mineral to be. When it is separated,a strange thing happens; the rock breaks down into fine, soft, soapy fibers. Scientists do not know why the rock can be separated easily into threads ,but they have found thousands of uses of this fireproof material, of the so- called "cloth of stone."
Answer: A new roofing material

Output: Which title best expresses the main idea of this passage?

Input: Consider Input: Article: There are many places to go on safari in Africa, but riding a horse through the flooded waters of Botswana's Okavango Delta must rank as one of the world's most exciting wildlife journeys. Several safari camps operate as the base for this adventure, providing unique rides twice a day to explore deep into the delta. The camps have excellent horses, professional guides and lots of support workers. _ have a reputation for providing a great riding experience. The morning ride, when the guides take you to beautiful, shallow lakes full of water lilies, tends to be more active. It is unlike any other riding experience. With rainbows forming in the splashing water around you and the sound of huge drops of water bouncing off your body and face. It is truly exciting. You are very likely to come across large wild animals, too. On horseback it is possible to get quite close to elephants, giraffes and many other animals. The sense of excitement and tension levels rise suddenly though, as does your heart rate, as you move closer to them. In the evening, rides are usually at a more relaxed and unhurried pace. With golden light streaming across the grassy delta and the animals coming out to eat and drink. _ though they are, rides at this time of day are still very impressive. As the sun's rays pass through the dust kicked up by the horses, the romance of Africa comes to life. Back at the camp you can kick off your boots and enjoy excellent food and wine. Looking back on your day, you will find it hard to deny that a horseback Safari is as close as you will ever come to answering the call of the wild.
Answer: Being part of the scene and getting close to animals.

Output: What does the author find most exciting about a horse safari?

Input: Consider Input: Article: Theangelshavefinallybeenconnectedtogether andthebowshaveallbeencarefully fixed across the branches.After three months of hard work, 16-year-old Suzy Jordan's tree is finally appearing at the yearly Festival of Trees in honor of her best friend, Emily Austin. "All that's needed now is a real angel,"says Suzy,"to help 13-year-old Emily recover from a recent bone marrow transplant and finally remove the leukemia " "Emily is the strongest person I know.There's always such brightness about her,"says Suzy,a student ar Orem High School. Last year,when Emily's cancer was _ ,she helped Suzy and other students decorate a red-and-white Christmas tree for Primary Children's Medical Center at the Festival of Trees. "It was so much fun for her,"says Emily's mother, Laurie,"she's seen the inside of the hospital more than a school since she was 5". But the good conditions didn't last long.In August, Suzy learned that her friend's leukemia returned, becoming worse.And she knew exactly what to do show her support. "Emily was so excited about helping out with the festival tree last year that I decided to surprise her by giving away a tree of my own,"she says. Because of being in hospital, Emily won't be able to see the tree."But I'm taking pictures to surprise her,"says Suzy."I want her to know that she'll always be an angel to me." Suzy's tree has given Emily's family hope for a miracle ."It has given Emily hope that she has a chance to be a normal girl and do all the things other girls do,"says Laurie Austin. Suzy's greatest hope is that she'll be able to give away more trees to the festival, with one big difference."The best wish of all,"she says,"is that Emily will be there with me, putting on the decoration."
Answer: A christmas tree gives hope for a miracle
Output: What's the best title for this passage?