In this task, you're given an article and an answer. Your task is to generate the fill-in-the-blank question for this answer based on the given article. The blanks are always at the end of the question, and can be filled with more than one word or phrase.
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Question: Article: There is a unique place where deserted factories have been transformed into a lively artistic zone - where the city's tradition and heritage meet with cutting-edge art and fashion. This is Redtory. Located at Yuancun Si Heng Lu, not far from the Pearl River of Guangzhou city, Redtory is a creative cultural and industrial zone made up of more than 30 old buildings - mostly red-brick ones. Back in 1956, it used to be the biggest canning factory in China. The factory produced the Can Dace with Black Bean Sauce, an iconic food product in the last century, well-known throughout south-east Asia. After the local government's industrial structure reformations, the canning factory moved away and the workshops were left deserted. There was nothing left but memories in well-preserved Soviet-style buildings. Not long after the noise of the running machines was gone, posters of advertisement and art were found hanging on the wall in the area. To enrich the cultural and artistic life of the people in Guangzhou, the abandoned factories reopened in 2009 - displaying art, fashion and culture of different forms. Redtory is home to more than 40 establishments including art galleries, themed restaurants and design studios. Large international cultural exchange activities, art exhibitions and seminars are often held here, attracting hundreds of thousands of visitors every year. Meanwhile, waste materials have been used wisely instead of being thrown away. For instance, some installations standing around the area are made up of the rusty machines or components from the old canning factory. The shabby and nostalgic appearance combined with fashionable and artistic features makes Redtory uniquely attractive. That may be the reason that Redtory is considered the holy land for young art-lovers in Guangzhou. Add.: No.128 Yuancun Si Heng Lu, Tianhe District, Guangzhou Bus: Yuancun Er Heng Rd Stop - 40,44,140,284,293,299,401,504,540,542,583,882;Yuancun Stop Terminal (Meilin Garden) - B11,243;Pazhou Bridge (North) Stop - 137,304,564,B7,B25 Metro: Exit B, Yuancun Station, Line 5
Answer: the place was intended for other purposes

Answer: The canning factory was removed from Redtory because _ .

Question: Article: It has been argued that an infant under three who is cared for outside the home may suffer because of the separation from his parents.The British psychoanalyst John Bowlby believes that separation from the parents during the sensitive "attachment" period from birth to three may scar a child's personality and incline to emotional problems in later life.Some people have drawn the conclusion from Bowlby's work that children should not be sent to day care before the age of three, and many people do believe this.But there are also arguments against such a strong conclusion. Firstly, anthropologists point out that the hidden love between children and parents found in modem societies does not usually exist in traditional societies.For example, we saw earlier that among the Ngonis the father and mother of a child did not raise their infant alone.But traditional societies are so different from modern societies that comparisons based on just one factor are hard to understand. Secondly, common sense tells us that day care would not be so widespread today if parents and caretakers found that children had problems with it.But Bowlby's analysis raises the possibility that early day care has delayed effects.The possibility that such care might lead to more mental illness or crime 15 or 20 years later can only be noticed by the use of statistics.Statistical studies of this kind have not yet been carried out, and even if they were, the results would be certain to be complicated and controversial. Thirdly, in the last decade, there have been a number of careful American studies of children in day care, and they have reported that day care had a neutral of slightly positive effect on children's development.But tests that have had to be used to measure this development are not widely enough accepted to settle the issue.
Answer: negative effect of infant school

Answer: This passage is mainly talking about _ .

Question: Article: Some colors people see late at night could cause signs of clinical depression . That was the finding of a study that builds on earlier study findings. They show that individuals who live or work in low levels of light overnight can develop clinical depression. Doctors use the word "clinical depression" to describe severe form of depression. Signs may include loss of interest or pleasure in most activities, low energy levels and thoughts of death or suicide. In the new study, American investigators designed an experiment that exposed hamsters to different colors. The researchers chose hamsters because they are nocturnal, which means they sleep during the day and are active at night. The animals were separated into four groups. One group of hamsters was kept in the dark during their night-time period. Another group was placed in front of a blue light, a third group slept in front of a white light, while a fourth was put in front of a red light. After four weeks, the researchers noted how much sugary water the hamsters drank. They found that the most depressed animals drank the least amount of water. Randy Nelson heads the Department of Neuroscience at Ohio State University. He says animals that slept in blue and white light appeared to be the most depressed. "What we saw is that these animals didn't show any sleep uneasiness at all but they did mess up biological clock genes and they did show depressive sign while if they were in the dim red light, they did not." Randy Nelson notes that photosensitive cells in the eyes have little to do with eyesight. He says these cells send signals to the area of the brain that controls what has been called the natural sleep-wake cycle. He says there's a lot of blue in white light. This explains why the blue light and white light hamsters appear to be more depressed than the hamsters seeing red light or darkness.
Answer: they are active at night and sleep during the day

Answer:
Researchers use hamsters in the experiment because _ .