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.

[EX Q]: Article: The future of pinnipeds  looks much brighter today than it once did. At one time, about 100 years ago, it seemed certain that many pinnipeds in the world would be destroyed by human hunters. Today, it appears that most species( ) of pinnipeds are out of danger. Hunting was not controlled during the 18th and 19th centuries, because little was known about the lives of pinnipeds. Whales and pinnipeds were hunted for the oil from their body fat. This oil was used in lamps before electric lights were invented. Millions of seals and other pinnipeds were used to provide oil for the lamps of the world. As a result, the numbers of many pinniped species fell rapidly. Several things happened that helped to save pinnipeds. First, species that were hunted to near extinction   were left alone because their numbers were too low and the cost of hunting them went up greatly. At the same time, electric lights were invented and the market for seal oil became smaller. Finally, governments around the world made laws to protect pinnipeds. As a result of all these things, the numbers of most pinniped species have grown in recent years. With some species, such as Northern fur seals, there may be as many animals alive today as there were before all the hunting began. However, oil is still a danger to pinnipeds and all sea animals. But this time it's not because they are hunted for their oil. The oil that puts them in danger is from oil spills  in the sea. The oil covers their fur and reduces their body temperatures. Oil also sticks to the foods they eat. This modern danger to pinnipeds and their environment is one we must work to prevent. 
 Answer: many families were using lamps
[EX A]: During the 18th and 19th century,   _  .

[EX Q]: Article: Scientists think it will be possible to record people's dreams and then interpret them, according to a new report. They claim to have developed a system which allows them to record higher level brain activity. Dr Moran Cerf told the journal Nature: "We would like to read people's dreams." Previously the only way to access people's dreams is for psychologists to ask about them after the event and try to interpret them. Dr Cerf hopes to eventually compare people's memories of their dreams with an electronic visualization  of their brain activity. He told the BBC: "There's no clear answer as to why humans dream. And one of the questions we would like to answer is when do we actually create this dream?" The scientist believes his latest research shows that certain neurons  or individual brain cells are linked with specific objects or concepts. He found that a particular neuron lit up when a volunteer thought about Marilyn Monroe. If a database was built up identifying various neurons with concepts, objects and people it would allow them to "read the subject's minds", according to Dr Cerf. However, Dr Roderick Oner, a clinical psychologist and dream expert, said that this kind of visualisation would be of limited help when it came to interpreting the "complex dream narrative". In addition to get a detailed picture of individual neurons subjects had to have electrodes implanted  deep in the brain using surgery. The Nature researchers used data from patients who had electrodes implanted to monitor and treat them for brain seizures . However, Dr Cerf said he hoped that it would be possible at a later stage to monitor people without invasive surgery. He said it would be "wonderful" to be able to read the minds of _ patients who are unable to communicate. 
 Answer: by linking certain neurons with specific objects or concept
[EX A]: According to the passage, psychologists try to interpret people's dreams  _  .

[EX Q]: Article: Some people succeed in unbelievable ways. Roussel was orphaned at the age of eight and went to live with his grandfather. He built on the music he had learned from his mother, entertaining himself by reading through the family music collection and playing his favorite songs on the piano. Three years later, Roussel's grandfather died, and his aunt adopted him. Her husband arranged for young Albert to take regular piano lessons. Summer vacations at a Belgian seaside resort added a second love to his life -- the sea. He studied to be a naval cadet  , but still made time to study music. In the French Navy, while he served on a warship based at Cherbourg, he and two friends found the time to play the music of Beethoven and other composes  . Roussel also began composing. At the Church of the Trinity in Cherbourg on Christmas Day 1892, he had his first performance as a composer. That success encouraged Roussel to write a wedding march, and one of his fellow offices offered to show it to a well-known conductor  , Edouard Colonne. When Roussel's friend returned with the manuscript  , he reported that Colonne had advised Roussel to give up his naval career and devote his life to music. Not long afterwards, at the age of 25, Roussel did just that. He applied characters that he had developed in the navy to his composing and became a major force in twentieth century French music. As for Eduoard Colonne's inspiring advice that Roussel devote his life to music, Roussel's navy friend later admitted that he had made it up and that he had never even shown Roussel's manuscript to the conductor. 
 Answer: Edouard Colonne
[EX A]:
What   _   did played the most important part in Roussel's final success.

