TASK DEFINITION: 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.
PROBLEM: 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.

SOLUTION: What causes tremors and quakes according to the passage?

PROBLEM: Article: For centuries Stonehenge has mystified and enraptured archaeologists and visitors. So maybe it is not surprising that another monumental wonder from prehistory has been overlooked for so long - even though it is just a mile away. Experts have discovered an 'extraordinary' line of giant stones that dates back more than 4,500 years. The area around Stonehenge is littered with prehistoric sights but the 90 or more stones, lying 3ft underground, have only just been discovered by sophisticated radar equipment towed by radar equipment. The buried monoliths are each up to 15ft tall. Instead of being arranged in a circle as they are at Stonehenge, it is thought they once formed a long standing line. 'We are looking at one of the largest stone monuments in Europe and it has been under our noses for something like 4,000 years,' said Professor Vince Gaffney, from the University of Bradford, one of the archaeologists leading the research. 'It's truly remarkable. We don't think there's anything quite like this anywhere else in the world. This is completely new and the scale is extraordinary." Prof. Gaffney believes the stones may have been planted by the same people who built Stonehenge, but he doubts whether there is a direct link between the two monuments. These stones were placed along a steep slope, cut into a natural dry valley to form a C-shaped feature. Precisely why the stones were put there remains a mystery. The archaeologists believe that at some stage the stones were pushed over. This was not done to damage the monument but rather to preserve whatever it was about the stones that seemed so important. "There was a transformation in the landscape that we do not understand," Prof. Gaffney said. "The stones had significance. These were special places. Societies were organized, as with the great cathedrals, to create these things."
Answer: It is the largest stone monument all over the world.

SOLUTION: What can we know about Stonehenge from the passage?

PROBLEM: Article: Most kids hate to see their summer end, perhaps none more than the Murset children. This summer, the Murset family decided to travel across the country to help families in need, which proved to be a wonderful experience. People. comreported that Gregg Murset and his wife, Kami, decided to take their six children, ranging from 7 to 16 years old, from their home in Phoenix, Arizona, across the country to spend 20 days on the road to help 25 families in need. "I told the kids and my wife over breakfast that I wanted to do this," Gregg Murset, 40, told People. com. "They all looked at me like I was crazy," he said, "but when we started to read the stories of people we were going to help, their attitudes completely changed." Through Gregg's company, he was able to be matched with groups such as Autism Speaks, the Leukemia & Lymphoma Society, and others that connected the Mursets to families with children who have cancer and other serious illnesses. "When you have a kid who is struggling, the last thing you're thinking of is cleaning the house," says Gregg. The family traveled to many cities in their journey, including Albuquerque, Denver, Kansas City, Chicago, and Buffalo. The trip covered 6,500 miles. "It's been amazing to watch my own children open their eyes and see that the world is bigger than they think," he said. "Even the little kids are learning from this experience." And the families they've helped feel blessed to have met them. "They showed up at 8 a.m. and we had a list of things we needed help with," said Jim Spencer, a 61-year-old father in Warren, Michigan, whose 12-year-old daughter, Lexi, was diagnosed with cancer a couple of years ago. The Mursets also used their travels as an opportunity to visit areas they had never been to, including the Statue of Liberty. But for Gregg, the main purpose of the trip was to teach his children to show concern for the happiness of other people rather than for themselves. "There is nothing wrong with your kid getting off the sofa, doing some work and sweating," said Gregg. "It's good for the kid and it's good for the soul."
Answer: Amazed.

SOLUTION:
How did the kids feel when Gregg Murset first told the family about his plan?