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.

Article: Carnival does not take place only in Louisiana. There are many celebrations around the world. In Brazil, the celebration is supposed to go on from the Saturday before Mardi Gras to Mardi Gras Day, but in some Brazilian cities the celebration can last seven or eight days. Just like New Orleans, not many important things are decided in Brazil from New Year's Day to Mardi Gras Day because everyone is preparing for or celebrating carnival. Most Brazilian parades have a subject, which could be political and historical. The parades had to have a subject related to Brazil until 1996. Some cities in Brazil do not have a street carnival but they might have an indoor ball. Bolivia has carnival parades for children and then more parades for adults. The children dress up in costumes and march in the streets. The adults make traditional dance groups and dance in the streets. But the main part of Bolivia's carnival is getting wet. Almost everyone gets wet from water balloons and water buckets. In Oruru, Bolivia, their carnival is held in the last ten days of the carnival season. People there participate in crafts and dancing, but their main carnival event is a ceremonial parade that lasts for twenty hours and parades for four kilometers. Over 20,000 dancers are involved as well as 10,000 musicians. This parade attracts at least 400,000 people. The carnival in Venice, Italy is often regarded as the most carefully prepared carnival and lasts the ten days before Lent . Many events are held in the canals including shows, concerts, dances, and water processions . The official ending to the celebration is the ball held in St. Mark's Square.
Answer: Carnivals around the world.
What's the best title of the passage?

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
How much bamboo does a panda eat every year?

Article: Thousands of years ago, people only ate food that was grown near their homes. Some kinds of food were only grown in one place, so people from other places didn't know about them. When Europeans first traveled to Central and South America in the 1500s, they discovered strange kinds of food that they had never seen before. Today, these are grown in a lot of different countries and they're sold in supermarkets all over the world. They don't seem strange any more! Potatoes were first grown in the Andes in South America. In 1586, they were taken to Europe by explorers . In 1719, they were taken to North America. Before 1719, nobody in North America had ever seen or eaten a potato. Today each American eats more than 60 kilos of potatoes a year. Tomatoes were also first grown by native Americans. When European explorers visited the south of America in 1500, they took tomato seeds back to Europe. Soon, tomatoes were grown in Europe, but people in England didn't eat them. At that time, a lot of English people thought that tomatoes were _ ! Chilies have been eaten in Central and South America for more than 8,000 years! In the 1500s, chilies were taken to Europe by explorers. Today, they are grown in hot countries all over the world.
Answer: Three.
How many kinds of food are mentioned in the passage?