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.

[Q]: Article: Researchers around the world have been trying their hand at making better use of the huge amount of wind energy available in nature to produce clean energy. Apart from this, studies are being carried out to harness usable wind energy produced by man-made technologies. One useful source identified by Indian inventor Santosh Pradhan about two years ago is a speeding train, which produces fierce wind that can be transformed into electricity. According to Pradhan's proposal, with a few small improvements in existing trains running in Mumbai, the largest city in India, at least 10,000 megawatts of electricity could be harvested each day. Building on this principle, designers Ale Leonetti Luparinia and Qian Jiang from Yanko Design have created a device called T-Box that harnesses wind energy from speeding trains. T-Box can be placed within the railway tracks. It is half-buried underground between the concrete sleepers , which does not disturb the normal train operating at all. According to Yanko, around 150 T-Boxes can be fitted along a 1,000-meter railway track. A train running at a speed of 200 kph can produce winds blowing at 15 miles a second. Based on this calculation, 150 T-Boxes can produce 2.6 KWH of electricity per day. The T-Box's design won a silver medal in last year's Lite-On Awards and was exhibited last summer at the Xue Xue Institute in Taipei, Taiwan Province. Though the figures look impressive, it is important to remember that the design is still at a conceptual stage and hasn't taken into account issues such as pieces of waste material produced by the device and the efforts and costs involved in the maintenance of the device. We can expect the technology to see the light of the day only after it clears these issues. If so, rail travel, one of the greenest forms of travel, will become greener and more energy-efficient.
Answer: It is based on Pradhan's idea.
[A]: What can we learn about T-Box?

[Q]: Article: To many Americans,Labor Day marks the end of the summer,a day off from work and school,and one last chance to relax.But Labor Day is much more than just a day off . It represents a very important victory for laborers everywhere.The holiday is a celebration of the social and economic achievements of American workers. More than a century ago workers were forced to deal with harsh conditions.They were paid very little and they often worked 10-to l2-hour days.Men, women and even small children were forced to work even when they were sick.Tired of long hours and dangerous conditions,workers began organizing themselves into labor unions.On top of fighting for higher pay and shorter workdays,they also fought for the rights of children.The workers wanted employers to place limits on the age of their workers so that small children were not overworked or hurt in factories. A New York City carpenter named Peter McGuire is credited for coming up with the idea for Labor Day.In 1872,after working many hours under poor conditions, McGuire _ 100,000 workers to go on strike.The workers marched through the streets of New York City,demanding a better work environment.McGuire spent a decade fighting for workers' rights.In 1882,he proposed the idea to create a special holiday for workers.On Tuesday,September 5,1882, more than 10,000 workers hit the streets of New York City for the first ever Labor Day parade.Two years later the celebration was moved to the first Monday in September.And in 1894,Congress passed a law making Labor Day a national holiday.Americans celebrated the first Labor Day holiday with a parade,picnics and fireworks. Today,many people hit the road to enjoy the last of their summer vacation.Others enjoy the long weekend with picnics,backyard barbecues or just rest and relaxation.However you spend Labor Day,remember that the holiday is a time to pay tribute to the workers who have made America what it is today.
Answer: The first ever Labor Day parade was held in 1882.
[A]: Which of the following statements is TRUE according to the passage?

[Q]: Article: Researchers who helped discover a new species of Mexican butterfly are offering to sell the naming rights to raise money to fund more research. Co-discoverer Andrew Warren is hoping to raise at least $50,000 by auctioning off the rights to name the 4-inch "owl eye" butterfly, which lives in Sonora, a Mexican state bordering Arizona. "That would support at least two years of research for our team down in Mexico," Warren said. "Money goes a long way down here in Mexico." According to the scientific tradition, discoverers of a new species have the say in naming it. In recent years, some discoverers have auctioned off their naming rights to raise money. Warren said the amount being sought for the butterfly is not out of the question, noting that naming rights for a new monkey species brought in $650,000 two years ago. A group of 10 new fish species that went on the naming auction block at the same time earlier this year brought in a total of $2 million. The butterfly discovered by Warren and researcher George Austin ranges as far north as Mexico. The butterfly was actually in a collection, misidentified as an example of another new species, at the McGuire Center for Lepidoptera and Biodiversity at the Florida Museum of National History in Gainesville, said Warren. They soon began the hard process of determining that it was indeed a "new" model of butterfly. After checking photos and comparing it with other known species, they determined it was a separate species.
Answer: Near the US-Mexico border.
[A]:
Where did the researchers discover the new species of butterflies?