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 Input:
Article: Back in old times, people had little knowledge about the universe and nature. Things we now consider to be common sense were mysteries to our ancestors. Over the years, major breakthroughs have been made in science and many phenomena have been explained. But still, there are always questions we can't yet answer, and The Guardian has listed some of them. 1. What makes us human? Just looking at your DNA won't tell you - human DNA is 99 percent _ to that of the chimpanzee and, believe it or not, 50 percent identical to a banana's! A lot of the things we once thought were unique about us - language and tool use, recognizing ourselves in the mirror and so on - have since been seen in other animals. Perhaps it's our culture that makes the difference or maybe our ability to use fire. It's also possible that our capacity for co-operation and our trading skills are what make us unique. 2. Why do we dream? Given the fact that we spend around a third of our lives sleeping, shouldn't we know everything about it? Unfortunately, scientists are still searching for a complete explanation of what happens when we sleep and why we dream. Austrian psychologist Sigmund Freud believed dreams were the expressions of wishes that we can't fulfill in our real lives. Others have wondered whether dreams are just random "noise" coming from a sleeping brain. 3. Could we someday live forever? Apart from accidents, most people die because of diseases that can be treated and aging. And since many diseases, such as diabetes and cancer, are diseases of aging, treating aging itself could be the key to extending our lives. Our knowledge of what causes us to age - and what allows some animals to live longer than others - is expanding rapidly. And though we haven't quite worked out all the details, we've worked out some pieces of the puzzles such as DNA damage and metabolism , which are all leading to the invention of drugs that can slow down the aging process. If we're lucky enough to lengthen our lives, we might even get to see the day when all of these questions are answered.
Answer: to explain what were once mysteries to our ancestors

Ex Output:
The main point of the passage is _ .

Ex Input:
Article: Animals can be extremely protective of their young. But when hard times call, animal fathers can be really a danger to their own kids. Daddy Lion A combination of laziness, pride, cruelty and anger makes the lion one of the most fearsome and worst dads of the animal kingdom. When not walking proudly across the jungle, the father lion just lazes around under the sun, or waits for one of its lioness partners to bring back food. Once the lioness gets home the food, the lion eats up most of it, and leaves little or nothing at all for the kids. The father doesn't even train the kids for hunting and surviving, it is the lioness who teaches them how to _ themselves. The Polar Father Cute, pure and soft. Protective of young ones and family? Sure. But what makes the polar bears one of the worst dads of the animal kingdom? They don't take care of the young ones, they won't take up the responsibility of feeding them, they won't take care of them like a father should. They just leave that to the mother bear. The Assassin Bug Size matters, you say? This little bug would eat its own eggs to stay strong and fulfill its hunger needs. The male assassin bug is actually responsible for guarding the eggs. The female assassin bug lays eggs in large numbers. The male bug eats the weaker eggs. Daddy Bass Usually, water calms you down. Not so much for this underwater species. The male bass is known to eat up eggs from its own spawn. It guards the spawn(,) laid by its female partner. However, when hungry and unable to hunt for food, the father won't think twice before eating up the eggs. And do you think your father was strict and hard? After reading this article, I'm sure you think your dad is the best in the whole wide world for not eating you up!
Answer: are dangerous to their whole family

Ex Output:
The animal fathers mentioned in this article _ .

Ex Input:
Article: An annoying problem for humans, who like to boast about all the distant planets and moons we have explored, is that we've never taken a good look right under our noses. The inside of the earth is relatively close, but how can we get there? The deepest oil well enters a mere six miles into the crust (the center of the earth is about 4,000 miles deeper). Russian scientists dug the deepest hole in Siberia, but bottomed out at about 7.5 miles below the surface. The Mohole project, a U.S. plan in the 1950s, called for drilling a hole 25 miles down to the boundary between the hard rocks of the crust and the soft mantle . Sadly the project involved government supporting. It gets harder and harder to drill deep into the earth because rocks get softer and softer. Hard but easily broken at the surface, rocks become plastic at depth, and the pressure caused by the weight of the overlaying crust --- about 52,800 pounds per square inch at a depth of ten miles, makes further drilling impossible. What little we know about the inside of the earth (like the fact that there's a crust, a mantle, and a core) comes from indirect evidence, such as the analysis of earthquakes. So maybe it's time for a thorough new method to explore the earth's inside. Scientist David Stevenson says we should forget about drilling holes. Instead, we should open a crack . Stevenson suggests digging a crack about a half mile long, a yard wide, and a half mile deep (not with a shovel) but with an explosion on the scale of a nuclear bomb. Next, he'd pour a few hundred thousand tons of molten iron into the crack, along with a robot. The iron, thicker than the surrounding crust, would move downward at about 16 feet per second, carrying the robot with it and opening the crack deeper and deeper. The iron mass would drop for about a week and 2,000 miles to the outer edge of the earth core, the robot sending out data to the surface. Stevenson compares his idea to space exploration. "We're going somewhere we haven't been before,"he says. "In all possibility, there will be surprises." This idea can probably be put in the drawer marked with Isn't Going To Happen. The robot would have to survive temperatures that would melt pretty much anything. But Stevenson's idea may inspire a new look at an old problem. Great things can come from what seems like impossible ideas.
Answer: more challenging

Ex Output:
Going inside the earth is _ than going into space.