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: I just finished the household chores for the night and was preparing to go to bed, when I heard a noise in the front of the house. I opened the door to the front room and to my surprise, Santa himself stepped out from behind the Christmas tree. He placed his finger over his mouth so I would not cry out. "What are you doing?" I started to ask. The words choked up in my throat, and I saw he had tears in his eyes. His usual jolly manner was gone. Gone was the eager, boisterous soul we all know. He then answered me with a simple statement"TEACH THE CHILDREN!" I was puzzled; what did he mean? Santa then reached in his bag and pulled out a FIR TREE ."Teach the children that the pure green color of the stately fir tree remains green all year round,describing the everlasting hope of mankind,all the needles point heavenward, making it a symbol of man's thoughts turning toward heaven." He again reached into his bag and pulled out a brilliant STAR. "Teach the children that the star was the heavenly sign of promises long ago. God promised a savior for the world, and the star was the sign of fulfillment of his promise." He then reached into his bag and pulled out a CANDLE. "Teach the children that the candle symbolizes that Christ is the light of the world, and when we see this great light we are reminded of he who displaces the darkness." Suddenly I heard a soft twinkling sound, and from his bag he pulled out a BELL. "Teach the children that as the lost sheep are found by the sound of the bell, it should ring mankind to the fold. The bell symbolizes guidance and return." Santa looked back and was pleased. I saw that the _ was back in his eyes. He said, "Remember, teach the children the true meaning of Christmas and do not put me in the center, for I am but an humble servant of the one that is, and I bow down to worship HIM, our LORD, our GOD."
Answer: he heard something unusual

Ex Output:
Author opened the door when he was going to sleep because _ .

Ex Input:
Article: There were red faces at one of Britain's biggest banks recently. They had accepted a telephone order to buy PS 100,000 worth of shares from a fifteen-year-old schoolboy (they thought he was twenty-one). The shares fell in value and the schoolboy was unable to pay up. The bank lost PS 20,000 on the deal which it cannot get back because, for one thing, this young speculator does not have the money and, for another, being under eighteen, he is not legally liable for his debts. If the shares had risen in value by the same amount that they fell, he would have pocketed PS 20,000 profit. Not bad for a fifteen-year-old. It certainly is better than delivering the morning newspaper. In another recent case, a boy of fourteen found, in his grandmother's house, a suitcase full of foreign banknotes. The clean, crisp, banknotes looked very convincing but they were now not used in their country of origin or anywhere else. This young boy headed straight to the nearest bank with his pockets filled with notes. The cashiers did not realise that the country in question had reduced the value of its currency by 90%. They exchanged the notes the notes at their face value at the current exchange rate. In three days, before he was found out, he took PS 200,000 from nine different banks. Amazingly, he had already spent more than half of this on taxi-rides, restaurant meals, concert tickets and presents for his many new girlfriends (at least he was generous!) before the police caught up with him. Because he is also under eighteen the banks have kissed goodbye to a lot of money, and several cashiers have lost their jobs. Should we admire these youngsters for being enterprising and showing initiative or condemn them for their dishonesty? Maybe they had managed for years with tiny amounts of pocket money that they got from tight-fisted parents. Maybe they had done Saturday jobs for peanuts. It is hardly surprising, given the expensive things that young people want to buy, such as fashionable running shoes and computer games, if they sometimes think up more imaginative ways of making money than delivering newspapers and baby-sitting. These lads saw the chance to make a lot of money and took it. Another recent story which should give us food for thought is the case of the man who paid his six-year-old daughter PS 300 a week pocket money. He then charged her for the food she ate and for her share of the rent and household bills. After paying for all this, she was left with a few coins for her piggy bank. "She will soon learn the value of money," he said. "There's no such thing as a free lunch. Everything has to be paid for and the sooner she learns that the better." At the other extreme there are fond parents who provide free bed and board for their grown-up children. While even the most hard-hearted parents might hesitate to throw their children out on the streets, we all know people in their late twenties who still shamelessly live off their parents. Surely there comes a time when everyone has to leave the parental nest, look after themselves and pay their own way in life. But when is it?
Answer: lost money as its young customer did not have the money to pay his debts

Ex Output:
One of Britain's biggest banks recently _ .

Ex Input:
Article: On Nov.18,1995,Itzhak Perlman,the violinist,came on stage to give a concert at Avery Fisher Hall at Lincoln Center in New York City. If you have ever been to a Perlman concert, _ him.He was stricken with polio as a child,and so he has braces on both legs and walks with the aid of two crutches . He walks painfully, yet majestically, until he reaches his chair.Then he sits down,slowly, puts his crutches on the floor, undoes the clasps on his legs,tucks one foot back and extends the other foot forward.Then he bends down and picks up the violin, puts it under his chin,nods to the conductor and proceeds to play. But this time,something went wrong.Just as he fmished the first few bars ,one of the strings on his violin broke.You could hear it snap ---it went off like gunfire across the room.There was no mistaking what that meant.There was no mistaking what he had to do. We figured that he would have to get up,put on the clasps again,pick up the crutches and limp his way off stage-to either find another violin or else find another string for this one.But he didn't.Instead.he waited a moment,closed his eyes and then signaled the conductor to begin again. The orchestra began,and he played from where he had left off.And he played with such passion and such power and such purity as they had never heard before. When he finished, there was an awesome silence in the room.And then people rose and cheered.He smiled,wiped the sweat from this brow, raised his bow to quit us,and then he said in a quiet tone."You know, sometimes it is the artist's task to find out how much music you can still make with what you have left.''
Answer: it's not easy for Itzhak Perlman to get on the stage because he is disabled

Ex Output:
By saying "getting on stage is no small achievement for him", the author really means _ .