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.

[Q]: Article: The United States covers a large part of the North American continent. Its neighbours are Canada to the north and Mexico to the south. Although the United States is a big country, it is not the largest in the world. In 1964, its population was over 185,000,000.        When this land first became a nation, after winning its independence from England, it had thirteen states. Each of the states was represented on the American flag by a star. All these states were in the eastern part of the continent. As the nation grew toward the west, new states were added and new stars appeared on the flag. For a long time, there were 48 stars. In 1959, however, two more stars were added to the flag, representing the new states of Alaska and Hawaii.        Indians were the first people of the land which is now the United States. There are still many thousands of Indians now living in all parts of the country. Sometimes it is said that the Indians are "the only real Americans". Most Americans come from all over the world. Those who came first in greatest numbers to make their homes on the eastern coast of North America were mostly from England. It is for that reason that the official language of the United States is English and that its culture and customs are more like those of England than those of any other country in the world. 
 Answer: Mexico is to the north of Canada.
[A]: Which of the following is TRUE according to the passage?


[Q]: Article: The gray-haired lady can't wait to leave the building to search for her dad. Unless watched, she will walk in the streets in an effort to find her father, who died 30 years ago. Not all cases of Alzheimer's disease  look like this, but Alzheimer's is a serious disease that is said to be the fourth or fifth leading cause of death for people over age 75. It is said that about three percent of the U.S. population over age 65 have Alzheimer's. In the early stages, people may exhibit short-term memory loss. Some may experience changes in personality, easy to be angry. As the disease progresses, patients might lose the ability to move and may be unable to speak or move at all. This progressive disease generally lasts 8 to 10 years before death occurs. While no one is certain what causes these changes in the brain's nerve fibers  , their effect is certain. Alzheimer's destroys not only the patients, but also spouses , friends and families. What should you do if you notice progressive memory loss in yourself or a loved one? Have the person examined by a doctor who is a specialist in the treatment of Alzheimer's disease? Though many reasons other than Alzheimer's disease may cause memory loss, its early diagnosis and treatment may delay some of the most serious effects. What feeling will you likely experience if a loved one suffers from Alzheimer's disease? A person will often go through the various stages of sadness, shock, anger, and so on. If the spouse develops the disease, you may experience hurt and disappointment when he or she doesn't remember you are married. Life for the Alzheimer's patients and their loved ones will never be the same as the disease progresses, bringing a deep sorrow, loss and even anger towards God. No matter what feelings are present, facing them honestly will serve one better than burying them. 
 Answer: She suffers from Alzheimer's disease.
[A]: What can be inferred from the passage about the gray-haired day?


[Q]: Article: The London Marathon celebrates its 32nd birthday. That is 32 years of stresses and anxieties, blisters   and painful knees, and tales that are hard to believe. Somehow, I've managed to run four of  _ . And I have medals to prove it. It seemed like a good idea at the time. I watched the first London Marathon on March 29th, 1981. It seemed extraordinary that normal people would want to run 26 miles and 385 yards. And, it must be said that they looked strange and not quite steady at the end of it all. There are, indeed, terrible tales of people losing consciousness when they reach the finishing line. But it drew all my attention. I knew I had to do it. Three years later I was living in London, not far from Greenwich where the event begins, and it seemed the perfect opportunity to give it a go. I was only a short train ride from the starting line, but more than 26 miles from the finish. "Who cares?" I thought. By the end I did. The moment I crossed that finishing line and had that medal placed around my neck was one of the finest in my life. The sense of achievement was great. Knowing that I'd run a Marathon felt extremely good. London provides one of the easiest of all the officially approved marathons because most of its course is flat. Yes, there are the cobblestones while running through the Tower of London, and there are the quiet patches where crowds are thin and you are crying out for some encouragement -- those things matter to the "fun" runners like myself, but the serious runners don't think of such things. Since 1981,almost half a million people have completed the London Marathon, raising more than $ 125 million for charity. For the majority of the runners, this is what it is all about. It is for charity, for fun, for self-development. I have always loved it. It's crazy, and it's one of the greatest things I've ever done. If you want to feel as though you've achieved something, run a marathon. 
 Answer: Greenwich.
[A]:
From what place does the London Marathon start?


