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.
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Question: 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.

Answer: What is an ion according to the passage?

Question: Article: When you're returning to Australia, be careful that you don't bring in pests and diseases. Some items you might bring back from overseas can be pests and diseases that Australia doesn't have. When you return, declare all food, meat, fruits, plants, seeds, wooden souvenirs, animal or plant materials. Australia has strict quarantine laws and tough on-the-spot fines. Every piece of luggage is now screened or X-rayed. If you fail to declare any quarantine items, or if you make a false declaration, you will get caught. In addition to on-the-spot fines, you could be accused and fined more than $60, 000 and you may risk 10 years in prison. All international mail is also screened. Some products may require treatment to make them safe. Items that are restricted because of the risk of pests and diseases will be seized and destroyed by the Australian Quarantine and Inspection Service(AQIS). In many cases, the goods you declare will be returned to you after inspection. However, any item that presents a quarantine risk will be withheld . You will be given a range of options for each item depending on the quarantine risk: Treating the item to make it safe; Holding the item until an import permit is presented*; * Re-exporting the item; Destroying the item. Those treatments with the sign "*" are subject to fees. Further information: For more detailed information about bringing in food, animals, plants, animal or plant materials, call the AQIS at 1800-020-504.
Answer: A pair of glasses.

Answer: Which of the following don't you need to declare when returning to Australia?

Question: Article: Sales Executive Pindan Labor Solutions is expanding and we require a sales executive. Working hours from Monday to Friday,12 months a year. However,some weekend work may be required. You will be assisting our team of consultants with business development. You can get a monthly income of $5,200.Essential requirements include previous sales experience,strong communication skills,high level of computer competency ,WA driver's license. For more information,please email stefan@tigerhospitality.com or phone 0452 236 541. Martial Arts Trainer GoKanRyu Karate has a number of positions available for people who have an interest in the martial arts. The position will involve training new students on working days. An expected first year income of $45,000.Excellent people skills and previous experience are essential. Own car and license required. Please contact Tim Hort on 0285 371 464 or kyle@hospitalio.com for further information. Workshop Manager Located in Wongan Hills WA,Beckman Machinery wants a service/workshop manager to join our successful team. Your role will be to provide the best possible service to customers,Monday to Friday. You must have trade certificate,excellent communication and computer skills. Knowledge of agricultural products is essential. You can get at least $50,000 in your first year. Please call Stuart 0427 777 105 or email stuart@boekemans.com.au if any further information is needed. Farmhand A general farmhand is required to work on a farm located 40kms from Condobolin.A driver's license is essential. Duties include:sheep,cattle work;cropping & irrigation .Weekends off,except during sowing and harvest periods.$39,000 a year. If you are interested in farm work,please email diane.moisis@cwcc.nsw.edu.au or call 0167 327 047 for detailed information.
Answer: A sales executive.

Answer:
Of the four positions,which offers the top yearly income?