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.

[EX Q]: Article: A job is more than just a job,especially to the older generation."It's not the money that matters,but the sense of selfworth," 56yearold Cheng Wonlan said.So,every day Ms Cheng carries a bag of parcels,letters and documents of all shapes and sizes and does her rounds in North Point.She's a courier . Five years ago,Ms Cheng was a nurse at a private clinic.She had worked there for almost 30 years but was made jobless when the doctor migrated .It was extremely difficult for her to find another job."People do not trust my ability when they learn how old I am," she said.After two years of searching,the mother of two eventually found another nursing job.But then after two years,she quit.Why? "My colleagues were young and they didn't understand me because of my age.They often asked me,'You are so old;what are you working for?' I was very unhappy." she said.So while the rest of her family left for work,she was left to lonely boredom at home.The urge to work drove her to suffering.Then,one of Ms Cheng's neighbours told her about Employee's Retraining Board (ERB) offering retraining courses for older people on specific occupations,such as convenience store assistants,junior clerks and so on. "I was interested in courier work.I didn't think my age was a barrier because I was fit and healthy.So I thought why not give it a try." she said.Upon graduation from the ERB,Ms Cheng was offered a job by the Speeding Shuttle Courier Service Company Limited.But then Ms Cheng was faced with a conflict:she was caught between honour and employment.It took Ms Cheng 24 hours to make up her mind and eventually came to the conclusion that there was nothing wrong or embarrassing about doing the job.So she took heart and went off to work as a courier. Ms Cheng's employer is delighted with her,"Ms Cheng has been working with us for two months and has shown a good responsible attitude to work."Anthony Chong,who runs the company,said.Currently,Mr Chong has 60 couriers working for his company:five of them are over fifty,four of whom have been through the ERB plan.Mr Chong said he hired older people because they were able and reliable."Age is not an important factor but attitude is.Many old people are more capable than the youngsters.They will not run from difficulties but the young ones will," he said."It is not easy to recruit young people since they shy away from hardship and challenges."
Answer: People didn't think she had enough working experience.
[EX A]: Why was it difficult for Ms Cheng to find another nursing job?

[EX Q]: Article: NANJING -- Another human H7N9 case has been found in east China's Jiangsu Province, the provincial health department confirmed on January 31. The patient, a 75-year-old woman from the provincial capital of Nanjing, is in a critical condition. The case brings the number of infections in the province to eight this year. H7N9 has killed 19 in China this year, and the total number of human infections reached 96 on January 26, according to the Chinese Center for Disease Control and Prevention. With bird flu cases increasing on a daily basis, public concern over people-to-people transmission during Spring Festival is growing. Li Lanjuan, researcher at the Chinese Academy of Engineering and a specialist in H7N9 prevention, said so far there have not been any cases in which one person transmits the flu to another, and the latter transmits the virus to a third person. Her team has identified H7N9 virus mutations this year, but the _ are not large-scale. "Inter-human transmission is very unlikely," said Li, who added that the virus has not evolved to be extensively drug resistant. The National Health and Family Planning Commission said on Wednesday live poultry markets should close if any case of H7N9 avian flu is detected. The southern metropolis of Shenzhen has closed all live poultry markets until February 13 for a thorough cleaning. The city near Hong Kong has reported 14 human H7N9 cases since December 18. Live poultry trading has been halted in Hangzhou, Ningbo and Jinhua cities in Zhejiang, which reported the largest number of human H7N9 cases. China has stepped up research for an H7N9 vaccine in the face of the increasing threat from the virus. Beijing's Snovac Hotech Ltd.,which developed the A/H1N1 and H5N1 vaccines, said in a press release on Wednesday that it has completed preclinical studies of an H7N9 vaccine arid prepared several types for clinical testing. The company has submitted an application to the China Food and Drug Administration to start clinical trials.
Answer: It once developed the A/H1N1 and H5N1 vaccines.
[EX A]: Which of the following is true about Beijing's Sinovac Biotech Ltd?

[EX Q]: Article: Half the world's population could face a shortage of food by 2100 due to climate change, a new report by US scientists warns. Rapid global warming is likely to reduce crop production in the tropics and subtropics , according to Professor David Battisti of the University of Washington. "The most extreme summers of the last century will become common," he says. "We must immediately create crops that can bear heat and drought if we are to adapt in time," he writes in Science journal. "The stresses on global food production from temperature alone are going to be huge," said Mr. Battisti. "And that doesn't take into account water supplies stressed by the higher temperatures." He worked with Professor Rosamond Naylor on Food Security and the Environment, to examine the influence of climate change on the world's food supplies. They predict there is a greater than 90% probability that by 2100, the average growing-season temperatures in the tropics and subtropics will be higher than any temperatures recorded there to date. "We are taking the worst of what we've seen historically and saying that in the future it is going to be a lot worse unless there is some kind of adaptation," said Professor Naylor. "This is a powerful reason for us to invest in adaptation, because it is clear that this is the direction we are going in terms of temperature and it will take decades to develop new food crop varieties that can better bear a warmer climate." "In the tropics, the higher temperatures could be expected to cut production of the primary food crops by 20-40%," the researchers said. Rising temperatures are also likely to reduce soil moisture , cutting production even further. Three billion people live in the tropics and subtropics now, and their number is expected nearly to double by the end of the century. "You are talking about hundreds of millions of additional people looking for food because they won't be able to find it where they find it now," said Professor Battisti. Crop failures would not be limited to the tropics, the scientists concluded.
Answer: To develop new crops
[EX A]:
According to Professor David Battisti, what should be done to deal with crops reduction caused by global warming?