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: Science Daily (Apr. 27, 2008)-- Dutch ecologist Roxina Soler and her colleagues have discovered that subterranean   and aboveground herbivorous   insects can communicate with each other by using plants as telephones.  Subterranean insects issue chemical warning signals through the leaves of the plant. This way, aboveground insects are warned that the plant is already "occupied".      Aboveground, leaf-eating insects prefer plants that have not yet been occupied by subterranean root-eating insects. Subterranean insects send out chemical signals through the leaves of the plant, which warn the aboveground insects about their presence. This messaging makes it possible for spatially-separated insects to avoid each other, so that they do not compete for, the same plant.      In recent years it has been discovered that different types of aboveground insects develop slowly if they feed on plants that also have subterranean insects and 'vice versa  . It seems that a mechanism   has developed through natural selection,  which helps the subterranean and aboveground insects to communicate with each other. This avoids unnecessary competition.       Through the "green telephone lines", subterranean insects can also communicate with     _ , namely the natural enemy of caterpillars  . Parasitic wasps   lay their eggs inside aboveground insects. The wasps also benefit from the signals sent by the leaves, as these help them find more insects for their eggs.      The communication between subterranean and above- ground insects has only been studied in a few systems. It is still not clear how widespread this phenomenon is, say the researchers. 
 Answer: By sending signals through the leaves.

Answer: How do subterranean and aboveground insects communicate with each other?


Question: Article: I used to think of myself as a fairly open person, but my bookshelves told a different story. Apart from a few Indian novels and the Australian and South African book, my literature collection consisted of British and American titles. Worse still, I hardly ever read anything in translation. My reading was limited to stories by English-speaking authors. So, at the start of 2012, I set myself the challenge of trying to read a book from every country in a year to find out what I was missing. As I was unlikely to find publications from nearly 200 nations on the shelves of my local bookshop, I decided to ask the planet's readers for help. I created a blog called A Year of Reading the World and put out an appeal for suggestions of titles that I could read in English. The response was amazing. Before I knew it, people all over the planet were getting in touch with ideas and offers of help. Some posted me books from their home countries. Others did hours of research on my behalf. In addition, several writers sent me unpublished translations of their novels, giving me a rare opportunity to read works otherwise unavailable to the 62% of the British who only speak English. Even so, selecting books was no easy task. With translations making up only around 4.5 percent of literary works published in the UK and Ireland, getting English versions  of stories was difficult. But the effort was worth it. I found I was visiting the mental space of the storytellers. These stories not only opened my mind to the real life in other places, but opened my heart to the way people there might feel. And that in turn changed my thinking. Through reading the stories shared with me by bookish strangers around the globe, I realised I was not alone, but part of a network that spread all over the planet. 
 Answer: Lists of English version books.

Answer: Which of the following might be found on the blog A Year of Reading the World?


Question: Article: "Last week," Dr. P said "I was invited to a doctors' meeting at the R. Hospital. In one of the rooms a patient, an old man, got up from his bed and moved slowly towards me. I could see that he hadn't long to live, but he came up to me and placed his right foot close to mine on the floor." "Frank!" I cried with surprise. He couldn't answer as I knew, but he tried to smile, all the time keeping his foot close to mine. My thoughts raced back more than thirty years--to the dark days of 1941, when I was a student in London. The scene was an air-raid shelter  , in which I and about a hundred other people slept every night. Among them were Mrs. West and her son Frank, who lived nearby. Sharing wartime problems, we got to know each other very well. Frank interested me because he was not normal  . He had never been normal, ever since he was born. His mother told me he was 37 then, but he had less of a mind than a baby has. Mrs. West, then about 75, was a strong, able woman, as she had to be of course, because Frank depended on her completely. He needed all the attention of a baby. One night a policeman came into our shelter and told Mrs. West that her house had been all destroyed. That wasn't quite true, because the West went on living there for quite some time. But they certainly lost nearly everything they owned. When that kind of thing happened, the rest of us helped the unlucky ones. So before we separated   that morning, I stood beside Frank and measured my right foot against his. They were about the same size. That night, then, I took a spare pair of shoes to the shelter for Frank. As soon as he saw me, he came running--and placed his right foot against mine. After that, he always greeted   me in the same way. 
 Answer: Frank's name was written on the door.

Answer:
How did Dr P know that the patient was Frank?


