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.
Example: Article: Homework can put you in a badmood , and that might actually be a good thing. Researchers from the University of Plymouth in England doubted whether mood might affect the way kids learn. To find out the answer, they did two experiments with children. The first experiment tested 30 kids. Someshapes were hidden inside a different, larger picture. The kids had to find the small shapes while sitting in a room with either cheerful or sad music playing in the background. To test their mood, the scientists asked the kids to point to one of five faces, from happy to sad. Children who listened to cheerful music tended to point to the smiley faces while the others pointed to the unhappy ones. The researchers found that sad kids took at least a second less to find the small shapes. They also found an average of three or four more shapes. In the second experiment, 61 children watched one of two scenes from a film. One scene was happy, and the other was sad. Just like in the first experiment, kids who saw the sad scene acted better compared to the others. The researchers guessed that feeling down makes people more likely to focus on a problem or difficult situation. Not all scientists agree with them, however. Other studies argued that maybe, that cheerful music in the first experiment distracted kids from finding shapes. While scientists work on finding out the answers, it still might be wise to choose when to do your tasks according to your mood. After eating a delicious ice cream, for example, write an essay. 
 Answer: whether mood affects their learning ability
Example solution: Researchers did experiments on kids in order to find out _ .
Example explanation: It is clearly mentioned in the article that to the check effect of mood on children is the main purpose of the experiment.

Problem: Article: Today, one can trace Venice's rich past from its buildings. Most cities can claim at least a handful of outstanding churches, palaces or houses of historical interest, but in Venice very nearly everything is remarkable, from the magnificent Piazza San Marco (St. Mark's Square ) and the palaces that line the Grand Canal to the centuries-old homes of simple fishermen. It would be easy to say that the city itself is an enormous museum if it were not for the fact it is so obviously alive. At first sight, Venice looks unbelievably permanent, an apparently complete Renaissance   city so untouched by time that there seems no reason why it should not go on forever. Now the city is slowly sinking, as the clay on which it is built loses its elasticity   and the massive wooden piles rot   away. Flooding, such a rare occurrence a hundred years ago now happens several times each winter. The damage caused by the flooding is immense, and the fabric of the ancient buildings is now being further damaged by pollution from the mainland town as well as by the wash produced by the constantly increasing number of motor boats that speed up and down the canals. A further threat to Venice comes from the Venetians themselves, some of whom are not particularly interested in preserving the city as one of the wonders of the world and would prefer to see it modernized. "What better place is there for the meeting of dear friends? See how it glows with the advancing summer; how the sky and the sea and the rosy air and the marble of the palaces all glimmer and melt together." Thus wrote the famous author Henry James, of Venice, which provided the setting for his story "The Aspern Papers", in the nineteenth century. The Splendor of Venice has captured the imagination of artists for centuries --- and not just of the great painters and novelists. How tragic now that she is faced with the double threat of man and nature. Venice indeed will be lucky to survive. 
 Answer: its marvelous ancient buildings

Solution: Venice proudly boasts  _  .