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.

Article: -For five days, Edmonton's Downtown Park is transformed into one huge stage where artists are able to share their talents, and where people are able to celebrate and enjoy themselves. Since its beginning in 1980, the Edmonton Folk Music Festival has been commemorating the true feeling of what folk music is all about and that's the traditional togetherness that is felt when people gather to share stories and feelings through song. This year will be the sixth year when volunteer Riedel will be offering up her time to the festival. "People coming off a busy spring and summer have a moment of relaxation," Riedel said. "It's really easy to relax, and it's great seeing family and friends have fun together." These families and friends come from all different kinds of musical tastes. People who take pleasure in Blues are there, so are people who love Bluegrass. This festival does its best to develop everyone's musical interests. With so many years of experience, the festival has become a well-oiled machine, and does whatever it can to make attendees feel as comfortable as possible. There are free water stations throughout the venue for people to fill up their travel cups. When people buy food, reusable dishes are given a $2 plate fee, but that is returned when the plate is brought back. The festival has completely sold out of tickets, and in record time. But with big names such as Van Morrison and Jakob Dylan, it's easy to see how that was going to happen. There is no parking area during the festival, so using the Park & Ride system or Edmonton Transit is highly recommended. A bike lock-up area is provided and will be available Thursday until Sunday one hour before the gates open until 45 minutes after the gates close. The Edmonton Folk Music Festival begins on Wednesday, Aug. 4 with Van Morrison playing the special donation fund concert, and will finish up on Sunday, Aug. 8.
Answer: remind people of the real sense of folk music
The Edmonton Folk Music Festival is held mainly to _ .

Article: Finland is perhaps the most beautiful and mysterious of the countries of northern Europe. Two-thirds of its surface is covered with thick forests and among them lie lakes, connected with rivers and canals. The northern part of this country is inside the Arctic Circle , where almost no trees can grow because of its cold weather and the people use their deer for transport, clothing and food. Then Finish history began in the Middle Ages. In about 1155,prefix = st1 /Finlandwas conquered by its western neighbouringSweden. After a period of rule byDenmarkin the 14thcentury, the Swedes won back independence and power in 1523 under their brave king. During the Napoleonic Wars (1814-1818)Finlandwas passed finally fromSwedentoRussia. The opportunity came in 1917, when the Russian Revolution brought foreign rule ofFinlandto an end. Shortly after Soviet Russia made peace withGermany, 1919 saw the founding of theFinnishRepublic. The years between the First and Second World War were years of progress and growing development. Finland has no coal or oil, and the nation's wealth lies in the timber from its forests, which supplies material for paper and furniture making, and in the electric power from its water.
Answer: is entirely covered with forests and lakes
From the passage, we learn that Finland _ .

Article: How the Grand Canyon was created remains one of the geology's greatest mysteries. Some evidence suggests that the process was a gradual one in which the Colorado River (which runs through the canyon) slowly cut deeper and deeper into the ground over millions of years. But volcanic rock samples taken from the canyon now suggest that the canyon was down-cut instead. Down-cutting is when a flood of water rushes over a landscape with enough force to cut deeply into the ground and leaves behind a canyon. Such a flood is usually released when a natural or man-made dam bursts. Robert Webb, a research geologist, says natural dams seem to have formed and broken across the Colorado River several times during the last million years. The dams were built when lava from the eruptions of nearby volcanoes flowed into the river. The lava hardened into hard rocks and blocked the river, causing it to back up and form a lake. Each time the lake grew so huge that it broke the rock dam, releasing a flash flood that furthered the down-cutting process and deepened the canyon. Down-cutting is not just an earthly event. Satellite photos sent back from Mars suggest that the process has happened there, too, say many other researchers. The photos, taken by the Mars Global Surveyor, indicate that an enormous lake existed on Mars 3.5 billion years ago. The lake spilled into a large nearby hole. One edge of the hole broke, releasing a flash flood that quickly carved out a grand canyon. The existence of down-cutting on Mars is just one more piece of evidence that the cold, dry planet was once warm and wet.
Answer: due to river flows over millions of years
In the past, deep canyons were believed to have formed _ .