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.

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.
From what place does the London Marathon start?

Article: Alzheimer's disease affects millions of people around the world. American researchers say the disease will affect more than one hundred million people worldwide by the year twenty fifty. That would be four times the current number. Researchers and doctors have been studying Alzheimer's patients for a century. Yet the cause and the cure for the mental sickness are still unknown. However, some researchers have made important steps towards understanding it. Several early signs of the disease involve memory and thought processes. At first, patients have trouble remembering little things. Later, they have trouble remembering more important things, such as the names of their children. There are also some physical tests that might show who is at risk of developing Alzheimer's disease. The tests look for proteins in brain and spinal cord fluid. The proteins appear to be found only in people with the disease. The protein tests correctly identify the presence of the disease in about ninety percent of patients. Now, a much simpler physical test to predict Alzheimer's risk has been developed. Researchers found that trouble with the sense of smell can be one of the first signs of Alzheimer's. Using this information, they developed a test in which people were asked to identify twelve familiar smells. These smells included cinnamon, black pepper, chocolate, paint thinner, and smoke. The study continued for five years. During this period, the same people were asked to take several tests measuring their memory and thought abilities. Fifty percent of those who could not identify at least four of the smells in the first test had trouble with their memory and thinking in the next five years. Another study has shown a possible way to reduce a person's chances of developing Alzheimer's disease in old age. Researchers in Chicago found that people who use their brains more often are less likely to develop Alzheimer's disease. Those who read a newspaper, or play chess or word games are about three times less likely to develop the condition. Researchers say they still do not know what causes Alzheimer's disease. But they say these findings might help prevent the disease in the future.
Answer: The patients of Alzheimer's disease.
Whats the main idea of the passage?

Article: Today was my high school reunion. I was the most remarkable student for all the wrong reasons. I was born with some birth defects and learning disabilities. I overcame them, but it was hard. While working blue-collar jobs, I lived in my car for a few years. On a cold winter night several years ago, I met Dr. X in the emergency room. He was a former classmate of mine, and we pretended not to know one another. He discovered I was living in my car and heard some of my stories. Then he arranged for me to be admitted to the hospital for a day so I could get warmed up and recover. When I left the hospital, I found a $100 bill in the gas tank door of my van . I'm sure it was from him. I now have a home of my own and I'm doing OK, considering everything. When I sent my reservation and check to the reunion committee, it was returned uncashed with a $50 bill along with a note saying "Please don't come." I guess my classmates are more closed-minded than I thought they would be. I was hoping age would change them but my wish turned out to be nothing but a joke. In addition to the reservation return, I have also seen a few forwarded emails _ my attempts to find out about the event. I hope none of those people were blessed with a child with learning or physical issues. I guess people never change on some things. Thankfully, I have found nicer, caringpeople along my journey in life, and for that I'd like to thank all of the kind people in the world.
Answer: His physical problems.
What made the author the most remarkable student?