TASK DEFINITION: In this task, you're given an article and an answer. Your task is to generate the fill-in-the-blank question for this answer based on the given article. The blanks are always at the end of the question, and can be filled with more than one word or phrase.
PROBLEM: Article: His first fight was for the equal rights of black people in South Africa. Then, as the first black president he fought to unite the country and organize the government. Now Nelson Mandela has set his sights on a new enemy, AIDS. On March 19 the 82-year-old, former president, hosted his second AIDS-awareness concert. He warned that 25 million people in Africa were already infected with the fatal disease. Mandela was born in a small village in South Africa in 1918. He was adopted by the chief of his tribe and could have been a chief himself and lived a happy country life. But he refused to be a chief when his people lived under racial discrimination ( ). He decided to fight for equal rights for all the people in South Africa. Before 1990, under the country's Racial Segregation Law , colored and white people lived separately. Black people were treated unfairly even when taking a bus. Blacks had to stand at the back of the bus to make room for white people even when there were only a few of them on board. For his opposition to the system Mandela was arrested and spent 27 years in prison. He was freed in 1990 and become the president of the country after the first elections were held in which everyone could vote. Mandela was not only a political fighter who attacked with speeches. He was also a trained boxer and fought in the ring when he was young. " Although I did not enjoy the violence of boxing, I was interested in how one moved one's body to protect oneself, how one used a strategy both to attack and retreat ," he wrote in his autobiography. As a skilful fighter, he chose music as his weapon against AIDS. He hopes to win another victory against AIDS.
Answer: controlling the spread of AIDS

SOLUTION: Nelson Mandela succeeded in doing the following except _ .

PROBLEM: Article: If you have a watch, don't go to a watchmaker's unless something is wrong with the machinery. Once I had a beautiful watch. And it had kept perfect time. But one night it happened that I forgot to _ it _ . Next morning I went to a watchmaker as I wanted my perfect watch to be set by the exact time. He examined it and said, "The regulator must be pushed up as your watch is four minutes slow. I tried to stop him from doing so, but he didn't listen and pushed the regulator. My beautiful watch began to gain. It gained faster and faster day by day. By the end of the second month it had left all the clocks and watches of the town far behind. I could do nothing but take it to another watchmaker to be regulated. I expected him to regulate the watch at once, but he asked me to come in a week's time. When at last I got my watch back from him, it began to slow down. And I failed to be in time for trains, business affairs, and even missed my dinners. Now I went to a third watchmaker. When I was waiting for him to repair my poor watch, he took it to pieces and said that he would try to finish this work in three or four days. What I could do was to nod my head. After that, my watch went for half a day, and then stopped. So I kept taking my watch from one watchmaker to another. But each watchmaker disappointed me. My watch had cost me two hundred dollars, but I paid for repairs more than two hundred. At last I decided to buy another watch, which I did.
Answer: you'd better not have your watch repaired if nothing has gone wrong with it

SOLUTION: The writer was sure that _ .

PROBLEM: Article: Now that military dogs are taking on a larger role in fight, they' re also taking on more of the risks that come with going to war, including developing post-traumatic stress disorder.The New York Times reports that more than 5 percent of the approximately 650 deployed military dogs are developing some form of canine PTSD . "It really is difficult, because cace the dog experiences these traumatic explosions, it's the same as the troops," Army Lt.Col. Richard A Vargus, chief of the law enforcement branch at CENTCOM told the Military Times in September."Some dogs move right through it and it doesn't affect them.Some dogs, it takes some retraining, and some dogs just refuse to work." Like humans, military dogs exhibit a range of changes in temperaments when they develop PTSD.Some become aggressive, others retreat.But because dogs can't express what the problem is, soldiers can be put at risk if their partner simply stops doing his job without warning. "If the dog is trained to find improvised explosives and it looks like it's working, but isn't, it' s not just the dog that' s at risk," Dr.Walter F.Burghardt Jr., chief of behavioral medicine at the Daniel E.Holland Military Working Dog Hospital at Lackland Air Force Base, told the Times."This is a human health issue as well." And searching for such devices has become a key responsibility for military dogs.Even after spending six years and nearly $ 19 billion on experimenting with innovative ways to detect bombs, the Pentagon admitted in 2010 that its most sophisticated technology was no match for a dog' s nose. "Electronic equipment is great in the laboratory, but out on the battlefield, you can't beat the dogs," Bill Childress, manager of the Marine Corps working dog program told the Los Angeles Times. Just as physicians have yet to find a safe way to treat PTSD among humans, so too are veterinarians weighing a wide range of options when it comes to helping their canine patients But offering dogs the same innovative treatments that their human counterparts get, doesn't guarantee a full recovery.It's a fact that fears once learned are never unlearned.
Answer: stop their partner in a strange way

SOLUTION:
When military dogs develop PCSD, they will _ .