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: Japanese workers who run secretly out of the office and spend their afternoons hanging around coffee shops may soon be caught out by their bosses. A new cellphonebased tracking device from Hitachi can show, on an employer's computer screen, not only the whereabouts of their workers but also whether they are standing, walking, running--or have fallen over. The system, called Partout, was originally developed as a monitoring device for the families of people with dementia, who may wander off and need to be located. "It's estimated that the number of elderly people with symptoms of dementia will reach 1.5 million in Japan next year," says Hitachi's Keisaku Shibatani. But the high cost of the system--early prices are around PS27,000--has put it out of reach of most families. Indeed, companies with large sales forces and police departments who want to track officers on dangerous patrol duties are interested in the system. Partout uses a multifunction location sensing unit that tracks users through global positioning satellites. The user's body motion is determined by an accelerometer inside the sensing unit: no movement means the subject has stopped, slow movement means they are walking, fast movement means they are running, and strong and unexpectedly sudden movement means the user may have fallen. The date is relayed through the user's cell phone to computer, which displays their position on a map. Graphics record the motion or position of the subject's body.
Answer: A new model of cell phone.

SOLUTION: What is mainly talked about in the text?

PROBLEM: Article: Though problems are a part of our lives, it certainly doesn't mean that we let them rule our lives forever. One day or the other, you'll have to stand up and say -- problem, I don't want you in my life. Of course, we've been fighting troubles ever since we were born. Problems with friends, parents, girlfriends, husbands, and children -- the list goes on. Apart from these, the inner conflicts within ourselves work, too. These keep adding to our problems. Problems come in different shapes and colors and feelings. But good news is that all problems can be dealt with. Now read on to know how to solve your problems. Talk, it really helps. What most of us think is that our problem can be understood only by us and that no talking is going to help. But the truth is that when you talk about, you're setting free the negative energies that have been gathering within you. Talking helps you move on and let go. Write your problems. Having a personal diary can also be of huge help if you don't want a real person to talk with. When you write down your problems, you're setting free all the tension from your system. You can try throwing away the paper on which you wrote your problems. By doing this, imagine yourself throwing away the problems from your life. Don't lose faith and hope. No matter what you lose in life, don't lose faith and hope. Even if you lose all your money, family ..., you should still have faith. With faith and hope, you can rebuild everything that you lose. Your problems aren't the worst. No matter what problem you get in life, there're another one million people whose problems are huger than yours. Tell yourself: when they can deal with them, why can't I? Your problems might just seem big and worse, but in reality they can be removed. Go about and solve your problems because every problem, however big or small, always has a way out.
Answer: How to deal with problems.

SOLUTION:
What is the text mainly about?