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: Giant pandas are now extremely rare. Their number is less than 1,000 in the wild. The hunting of pandas has been banned for many years, so this is not the problem. Destruction of its habitat, when areas are cleared for growing crops, is one of the main reasons for panda's decline . Another reason is that the bamboo on which they mainly feed, is dying back. The pandas find it difficult to move to new feeding areas. As the bamboo disappears, the pandas simply starve to death. Bamboo is a poor source of food, and pandas have to eat up 45kg of it every day, a process that takes them up to 16 hours. The process goes on day and night, with the pandas in a constant cycle of eating for eight hours and sleeping for four. They can eat other foods, but will rather starve than change their diet when bamboo is scarce. Giant pandas are very good climbers, and use this skill to escape from the enemy. The giant panda lives alone for most of its life, only coming together with another of its species for long enough to mate. A newborn panda baby is born hairless and blind, is about 15cm long and weighs only 100g. The baby will stay with its mother for about 18 months, until it is able to set up its own territory Chinese and American scientists are studying giant pandas and their habits in order to put in place a major conservation programme. Zoos around the world are taking part in panda breeding programmes. There is still hope that with human's help, the giant panda can survive in the wild.
Answer: Nearly 2 tons

A: How much bamboo does a panda eat every year?
****
Q: Article: The people who built Stonehenge in Southern England thousands of years ago had wild parties, eating barbecued pigs and breaking pottery. This is according to recent work by archaeologists--history experts who investigate how human beings lived in the past. Archaeologists digging near Stonehenge last year discovered the remains of a large prehistoric village where they think the builders of the mysterious stone circle used to live. The village is about 4,600 years old, the same age as Stonehenge and as old as the Pyramids in Egypt. It is less than two miles from the famous ancient landmark and lies inside a massive man-made circular dirt wall, or "henge", known as the Durrington Walls. Remains found at the site included jewellry, stone arrowheads, tools made of deer antlers, wooden spears and huge amounts of animal bones and broken pottery. "These finds suggest Stone Age people went to the village at special times of the year to feast and party", says Mike Parker-Pearson from Sheffield University in England. He said many of the pig bones they found had been thrown away half-eaten. He also said the partygoers appeared to have shot some of the farm pigs with arrows, possibly as a kind of sport before barbecuing them. An ancient road which led from the village to the River Avon was also found. Here, the experts think, people came after their parties to throw dead s in the water so the bodies would be washed downstream to Stonehenge. Parker-Pearson believes Stonehenge was like a cemetery where ancient Britons buried the dead and remembered their ancestors. The theory is that Stonehenge is a kind of spirit home to the ancestors. The recent discovery of the village within the Durrington Walls shows that Stonehenge didn't stand alone but was part of a much bigger religious site, according to Parker-Pearson.People still come to worship and celebrate at Stonehenge today. They meet there when the sun sets on the shortest day of winter and when it rises on the longest day of summer. But the days of barbecuing whole pigs there and throwing family members into the river are a thing of the past. At present, it has been attracting a great number of visitors all around the world. Here is a comment from a visitor. "I am speaking to a friend on Facebook who is heartbroken that she went there with utter love and respect for the site and that the whole Summer Solstice event was full of drunk party goers and those that had gone in a respectful, loving way were made to sit on the outside, so as not to be disturbed by the revellers."
Answer: A site where dead people were placed or remembered.

A: What was Stonehenge according to the text?
****
Q: Article: Treat with Respect The speed with which Man is changing the face of Earth has outstripped all the mighty processes of nature put together. In his haste to supply himself with increasing quantities of Earth's treasures he risks destroying one he greatly needs, his natural surroundings. Some countries set aside unspoiled areas of natural beauty. prefix = st1 /Canadahas the largest system of national parks in the world, 29 in all covering about 13 million hectares, preserving the different landscapes and the plant and animal life. Other countries are restoring areas which have been reduced to waste land by mining. At Broken Hill in Australiadrifting sand from rock crushing turned the area into a desert swept by sand storms. This is now being irrigated, fertilized and planted with grass and trees. In Great Britain quarries and gravel pits are being filled in or made into lakes, industrial wasteland is being turned into playing fields and waste tips into sloping green hills. However Man tries to look after Earth, the fact is that he is using up at a great rate resources, especially fuel resources, which have taken millions of years to accumulate and which he cannot renew. Yet every day the Earth receives a huge supply of energy from the Sun. Man has made several experiments in using solar energy to heat furnaces , cookers, and water-distillers. In space technology, e.g. on satellites, solar cells convert sunlight into electricity. Houses and offices have been designed which are centrally heated by water or air heated by the sunlight. When Man can trap and store this energy, so that he can use it exactly as he needs it, he will have not only an endless supply, but a clean and safe one.
Answer: Energy from the Sun.

A:
According to this selected passage, which energy is considered to be endless, clean and safe?
****