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.

Ex Input:
Article: A new study revealed that the formation of the Earth, Sun and Moon that cause changes in Earth's tides can also trigger a special kind of Earthquake along the California's San Andreas Fault . The study, published in the journal Proceedings of the National Academy of Science,is based on previous researcher suggesting that the gravitational tug of sun and moon is not only affecting the sea levels of Earth, but can also stretch and compress that Earth's crust, producing tremors and quakes. Furthermore, the new study showed that small tremors deep underground were more likely to occur during certain periods of the tidal cycle. For the study, the researchers looked at about 81,000 low-frequency earthquakes from 2008 to 2015 along the Parkfield section of the San Andreas Fault and compared it to the two-week tidal cycle known as the "fortnightly tide," Low-frequency earthquakes are named due to the rumbling sound they make and not by the rate of its occurrence. These kinds of earthquake only occur about 15 to 30 kilometers below ground and are no larger than magnitude 1 in the Richter scale. The researchers discovered that low-frequency earthquakes tend to occur during the waxing period of the tidal cycle, when the tides are getting little by little. It is already known that the strongest Earth tides occur when the sun and moon are in a straight line, while the tide is at its weakest state when the sun and moon are 90 degrees apart. According to the researchers, low-frequency earthquakes show that some part of the San Andreas Fault is creeping, or slowly moving, almost all the time. With the help of the tidal forces, low-frequency earthquakes could provide more information about the deeper part of the fault. "They tell us that the fault continues down below where the regular or typical earthquakes stop on the San Andreas, about 10 or 12 km (about 6 to 7 miles)," said David Shelly, a seismologist at USGS and helped write the study, in a statement. "And they tell us a lot of things about that deep part of the fault that we had no idea existed at all before." "It's almost like having a lot of little creep meters embedded in the fault,"Shelly said. "We can use these low-frequency earthquakes as measurements of, at least in a sense, how much slip is happening at each little spot on the deep part of the fault where we see these events. When we don't see them, we don't know what's happening; we don't know whether it,s slipping silently or not slipping at all." The information is incredibly useful, he added. Whenever the deep part of the fault slips, the stress gets transferred to the shallow part of the fault. "So if all of a sudden, we saw that the deep part of the fault was slipping a huge amount, it might be an indication that there was an increased chance of having an earthquake come at the shallower part of the fault" he said.
Answer: The movement of creeping in the deep part of the San Andres Fault.

Ex Output:
What causes tremors and quakes according to the passage?

Ex Input:
Article: Buster Brown was a thief and a good one too,he thought. He'd never been caught by the police because he never took chances.He was always prepared for any unforeseen event or emergency. Confidently,he stood outside the house of his intended victim and read the sign on the front gate of the house."Don't worry about the dog--be aware of the owner!" it said.Buster smiled and found his way in. The house looked quite normal outside,but inside it was very exotic with fascinating objects on display.As he began putting them into his bag,a dog came into the room.It stopped when it saw Buster,then wagged its tail madly and went over to him,licking his outstretched hand. "Good boy," Buster whispered. "What a great guard dog you are--trying to lick me to death." Satisfied he'd made friends with the dog,Bluster began to wander round the house,choosing items to put in his bag.His skilled eye picked out only the best antiques :a pair of silver candleholders,a silver tea-and-coffee service,etc..His new friend,the dog,sat and watched,as if wondering what was happening. "Well,boy," Buster whispered,finally."That might do.Any more and I won't be able to carry it!" He swung the heavy bag onto his shoulders, just as the lights came on, nearly blinding him. He shielded his eyes with his hand. "You're a very silly person," the figure in the doorway said, his voice dry and dust. As the man came closer, Buster could see he was well dressed. His face seemed familiar, but Buster couldn't quite place where he had seen him before. "You should have taken more notice of the sign outside," the man rasped. "I knew about this attempted robbery last week and I also know you will end up behind bars for 20 years. Fancy trying to rob the house of the world's greatest fortune-teller!"
Answer: He had never been caught by the police.

Ex Output:
Why was Buster so confident?

Ex Input:
Article: How do you design a pay plan that motivates people to do their best work? A new study by three Harvard researchers suggests a novel answer: Shortly after you hire new workers, give them a raise. "Previous research has shown that paying people more than they expect may elicit reciprocity in the form of greater productivity," notes Deepak Malhotra, a Harvard business-administration professor who worked on the study. What he and his colleagues found, however, was that the connection between more pay and extra effort depends on presenting the increase "as a gift--that is, as something you've chosen to do purely as a nice gesture, with no strings attached." Malhotra and his team studied 267 people hired by oDesk, a global online network of freelancers, to do a one-time data-entry project for four hours. All of the new hires were people in developing countries, for whom hourly wages of $3 and $4 were higher than what they had been making in previous jobs. The researchers split the group up into three equal parts. One group was told they would earn $3 an hour. A second group was initially hired at $3 an hour but, before they started working, they got a surprise: The budget for the project had expanded unexpectedly, they were told, and they would now be paid $4 an hour. The third group was offered $4 an hour from the start and given no increase. Even though the second and third groups were eventually paid the same amount, the second group worked harder and produced more--about 20% more--than either of the other two. People in the second group also showed the most _ , maintaining their focus all the way through the assigned task and performing especially well toward the end of the four hours. Interestingly, the more experienced employees in the high-performing group were the most productive of all, apparently because their previous work experience led them to appreciate the rarity of an unexpected raise. Contrary to conventional wisdom, Malhotra points out that higher pay, in and of itself, didn't promote productivity: People who made $4 an hour from the beginning worked no harder than those who were hired at $3 and were then paid $3. To get the most impact from their pay plans, he adds, companies might consider not only what to pay new hires, but when to pay it. "The key thing is how you present [the reason for an increase]," he says. Doling out extra money could promote productivity most "if you make it clear that the pay raise is something you're choosing to do just because you can. Our theory is that people will reciprocate. If you do something nice, they'll do something nice back."
Answer: None of the participants earned more than $4 an hour in previous jobs.

Ex Output:
Which of the following is true about the research?