Article: Studies show farmland in Africa is often lacking in important nutrients. But researchers say combining different farming methods may help. Since the world food crisis several years ago, researchers have directed more of their attention to small farms. Most farms in areas south of the Sahara Desert are only about one or two hectares. One of the goals is to increase production without necessarily clearing more land to grow additional crops. American researchers say that can happen with greater use of an agricultural system called perennation. It mixes food crops with trees and perennial plants - those that return year after year. Mr. Reganold, who is with Washington State University, says poor soil may have resulted from years of weathering that washed away many nutrients. He says some farmers may have done more harm than good. He estimates that up to two billion dollars worth of nitrogen, phosphorous and potassium is lost from African soil each year. The scientist says the word perennation defines three systems that are already used in Africa. The oldest of the three is called evergreen agriculture. This is where farmers plant trees with their crops. John Reganold says farmers in Africa have been doing this for sixty years, but it seems to be growing in popularity. The method is gaining widespread use in countries such as Niger, Burkina Faso, Malawi and Zambia. The trees are planted among maize, millet or sorghum crops. They not only add nitrogen to the soil through their roots, but also through their leaves when they fall off and break down. At other times of the year, the trees can protect plants from strong sunlight. Mr. Reganold was one of three researchers who wrote a report about perennation. It was published in the journal Nature. Question: This report is mostly likely to be a journal of _ . Yes or no, is the answer "agriculture"?
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Article: The Lego Group had a very low beginning in the workshop of Ole Kirk Christiansen,a carpenter from Denmark.Christiansen began creating wooden toys in 1932.Two years later, he came upon the Lego name by putting together the first two letters of the Danish words Leg and Godt,which mean "play well."The name could be interpreted as "I put together" in Latin;it is also similar to the Greek verb meaning "gather" or "pick up". In 1947,the company enlarged to making plastic toys.At first,the use of plastic for toy production was not highly regarded by salesmen and consumers of the time.Many of the Lego Group's shipments were returned,following poor sales.However, Christiansen's son,Godtfred Kirk Christiansen,saw the great potential in Lego bricks to become a system for creative play-As the junior managing director of the Lego Group,he spent years trying to improve the "locking" ability of the bricks and made the bricks more versatile .In 1958, the modem interlocking brick design was finally developed and patented . Today Lego is sold in more than 1 30 countries.Every minute 33,824 Lego bricks are made,and kids around the world spend 5 billion hours a year playing with Lego.There will be more than 400 million people playing with Lego bricks this year.On average,every person in the world owns 62 Lego bricks,and about seven Lego sets are sold every second. This year Lego fans all over the world are celebrating the 50th anniversary of the tiny building blocks.Though already 50 years old,Lego is still the same product it was in the 1950s. Bricks bought then are still compatible with present bricks and that is probably the reason the toy has never fallen out of favor. Question: What is most likely the reason why Lego still remains popular? Yes or no, is the answer "Old Lego bricks may still be connected to new ones."?
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Article: Here's a movie--a sharp, sugar-rush of fun that's guaranteed to entertain the entire family. With some terrific computer-generated effects, a great cast and a fun-packed storyline, Robots is the best animated film since The Incredibles. Yep, it really is that good. Set in a world populated by robots, Ewan McGregor plays Rodney Copperbottom, a young robot who leaves his small-town home to pursue his dream of becoming an inventor. But after arriving in Robot City, his hopes of getting a job at Bigweld Industries are destroyed when he learns the firm has been taken over by the evil Ratchet (Greg Kinnear). Egged on by his controlling mum, Madame Gasket (Jim Broadbent), Ratchet plans to reduce half of Robot City's citizens to scrap metal by refusing to sell the spare parts they need to survive. Instead, he wants to make a fortune selling expensive upgrades that few can afford. As he says, "Why be you when you can be new?" Aided by a few misfit robots known as the Rustles--including Robin Williams as the cowardly' Fender ("I'm made of a metal called Afraidium")--Rodney must track down the firm's founder, Bigweld (Mel Brooks), and convince him to save the city from Ratchet's plans. The first thing that'll strike you about the movie is the thought that's gone into creating Robot City. It's a wondrous world full of mechanical marvels including wind-up cars and walking streetlamps. Also terrific are the special effects. This might be an animated movie but at times you'll catch yourself thinking it's really a live-action film. Of course, there have been plenty of animated movies that looked the part but were let down by a weak storyline (see Shark Tale, for example). But Robots grips right from the start thanks to a heart-warming and thoroughly engaging plot that never bores. My only complaints are with Williams who, as usual,has a one-in-10 success rate with his jokes. Also a letdown is a romantic subplot between Rodney and a shapely robot called Cappy (Halle Berry) that doesn't go anywhere. Complains aside, this... Question: This piece of writing is a _ . Yes or no, is the answer "film review"?
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