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.

Input: Consider Input: Article: Recent research has claimed that an excess of positive ions in the air can have an ill effect on people's physical or psychological health. What are positive ions? Well, the air is full of ions, electrically charged particles, and generally there is a rough balance between the positive and the negative charged. But sometimes this balance becomes disturbed and a larger proportion of positive ions are found. This happens naturally before thunderstorm, earthquakes when winds are blowing in certain countries. Or it can be caused by a build-up of static electricity indoors from carpets or clothing, or from TV sets, duplicators or computer display screens. When a large number of positive ions are present in the air many people experience unpleasant effects such as headaches, fatigue , excessive anger, and some particularly sensitive people feel sick or even suffer mental disturbance. Animals are also affected, particularly before earthquakes, snakes have been observed to come out, rats to flee from their burrows, dogs howl and cats jump about unaccountably. This has led the US Geographical Survey to fund a network of volunteers to watch animals in an effort to foresee such disasters before they hit vulnerable areas such as California. Conversely, when large numbers of negative ions are present, then people have a feeling of well-being. Natural conditions that produce these large amounts are near the sea, close to waterfalls or fountains, or in any place where water is sprayed, or forms a spray. This probably accounts for the beneficial effect of a holiday by the sea, or in the mountains with streams or waterfalls. To increase the supply of negative ions indoors, some scientists recommend the use of ionisers. They claim that ionisers not only clean and refresh the air but also improve the health of people sensitive to excess positive ions. Of course, there are the detractors, other scientists, who dismiss such claims and are skeptical about negative/positive ion research. Therefore people can only make up their own minds by observing the effects on themselves, or on others, of a negative rich or poor environment. After all it is debatable whether depending on seismic readings to anticipate earthquakes is more effective than watching the cat.
Answer: It's a charged particle.

Output: What is an ion according to the passage?

Input: Consider Input: Article: Global warming happens when greenhouse gases trap heat and light from the sun in the earth's atmosphere, which increases the temperature. This is like when heat is trapped in a car. On a hot day, the car gets hotter when it is out in the parking lot. This is because the heat and light from the sun can get into the car, by going through the windows,but it can't get back out. This is what the greenhouse effect does to the earth .The heat and light can get through the atmosphere, but it can't get out As a result,the temperature rises. Sometimes the temperature can change in a way that helps us. The greenhouse effect makes the earth appropriate for people to live on Without _ ,the earth would be freezing,or it would be burning hot. It would be freezing at night because we would not get the sun's heat and light .During the day, especially during the summer, it would be burning because the sun would be up with no atmosphere to filter it,so people,plants,and animals would be exposed to all the light and heat. Although the greenhouse effect makes the earth able to have people living on it,if there gets to be too many gases,the each can get unusually warmer, and many plants,animals.and people will die. Plants would die because they would not be able to take the heat .This would cause us to have less food to eat, and it would also limit the food that animals have. With less food for the animals that we need to survive we would even have less food. Gradually, people,plants,and animals would all die of hunger. People are doing many things to try to stop global warming .One thing is carpooling--driving with someone to a place that you are both going to. Another thing is being more careful about leaving electrical devices turned on. Now, more people are even riding buses or bikes to lower the amount of greenhouse gases in the air .Although adults do many things to help stop global warming, kids call do just as much.
Answer: It prevents all the light from the sun shining on the earth.

Output: What is the effect of atmosphere?

Input: Consider Input: Article: A visit to a zoo can be an amazing experience for people of all ages. If you want to get close to wildlife, why not visit one of the following zoos in the UK? Longleat Safari & Adventure Park Wiltshire's Longleat Safari & Adventure Park is the UK's oldest safari park. Opened in 1966, it was the first safari park opened outside Africa. It was just a 100-acre lion reserve in the beginning, but it has grown fast over the years. Now you can see parrots and other creatures here, although lions are still popular with many people. Open from mid-February to early November, a day ticket costsPS26 for adults. Admission for 3- to 14-year-old isPS18.50 andPS21 for the over-60s. Located just off the A36 between Bath and Salisbury, it can be reached by taking the A362. Bristol Zoo Bristol Zoo is one of the UK's oldest zoos. It will celebrate its 180th anniversary in 2016. Here, you'll find over 400 different species of creatures. It also has nine animal houses, so even if the weather isn't at its best, there are still lots of amazing creatures to look at, including the endangered red panda. Perhaps one of the most popular places is Bug World, where you can see all kinds of scary insects. Admission for adults isPS14 andPS8.50 for 3- to 14-year-olds. Located in the Clifton region of Bristol, you can reach the zoo by taking either the No. 8 or 9 bus. Clifton Down train station is also close by, and if you are taking public transport, you can buy a discounted entry ticket to the zoo.
Answer: It's the first safari park in the UK.
Output: What do we know about Wiltshire's Longleat Safari & Adventure Park?