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: 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: Do you know how to play a game called "Musical Chairs"?It is easy to play and most people enjoy it. All you need are some chairs, some people and some way of making music. You may use a piano or any other musical instrument, if someone can play it. You may use a tape recorder. You can even use a radio. Put the chairs in a row. The chairs may be put in twos, back to back. A better way is to have the chairs in one row with each chair facing in the opposite direction to the chair next to it. The game is easy. When the music starts, the players walk round the chairs. Everyone goes in the same direction, of course, they should walk in time to the music. If the music is fast they should walk quickly. If the music is slow, they should walk slowly. The person playing music cannot see the people in the game. When the music stops, the players try to sit on the chairs. If a person cannot find a chair to sit on, he drops out. Then, before the music starts again, one chair must be taken away. When the music stops again, one more player will be out.. At last, there will be two players and one chair. The one who sits on the chair when the music stops is the winner.
Answer: nine chairs

Ex Output:
If ten people are playing musical chairs,you must begin with _ .

Ex Input:
Article: Passenger pigeons once flew over much of the United States in unbelievable numbers. Written accounts from the 18th and 19th centuries described flocks so large that they darkened the sky for hours. It was calculated that when its population reached its highest point, there were more than 3 billion passenger pigeons--a number equal to 24 to 40 percent of the total bird population in the United States, making it perhaps the most abundant bird in the world. Even as late as 1870 when their numbers had already become smaller, a flock believed to be 1 mile wide and 320 miles (about 515 kilometers) long was seen near Cincinnati. Sadly, the abundance of passenger pigeons may have been their _ . Where the birds were most abundant, people believed there was an ever-lasting supply and killed them by the thousands. Commercial hunters attracted them to small clearings with grain, waited until pigeons had settled to feed, then threw large nets over them, taking hundreds at a time. The birds were shipped to large cities and sold in restaurants. By the closing decades of the 19th century, the hardwood forests where passenger pigeons nested had been damaged by Americans' need for wood, which scattered the flocks and forced the birds to go farther north, where cold temperatures and spring storms contributed to their decline. Soon the great flocks were gone, never to be seen again. In 1897, the state of Michigan passed a law prohibiting the killing of passenger pigeons, but by then, no sizable flocks had been seen in the state for 10 years. The last confirmed wild pigeon in the United States was shot by a boy in Pike County, Ohio, in 1900. For a time, a few birds survived under human care. The last of them, known affectionately as Martha, died at the Cincinnati Zoological Garden on September 1, 1914.
Answer: were the largest bird population in the Us

Ex Output:
In the 18th and early 19th centuries, passenger pigeons _ .