input: OPTIONS:
- boy and girl
- the two authors
- research and result
- pink and blue Now, answer this question: Read the following article and answer the question. Article: Anyone who ever wondered why a dying plant, say, a freshly-cut red rose may appeal to a lady friend, might take some comfort in science, which once again offers us a reasonable answer to one of the world' s great mysteries. Beyond a common preference in people for blue, "the long history of color preference studies has been described as 'confusing and contradictory '," write scientists Anya Hurlbert and Yazhu Ling of England' s Newcastle University, authors of a new study in the journal Current Biology. "This fact is perhaps surprising," they said, "though the popularity of the concept that little girls differ from boys in preferring pink." But the scientists believe they have an answer to this scientific mystery, discovering women's preference for red, hidden above the average liking for blue. In their study, the pair quickly flashed color cards, displaying many different aspects, at 208 volunteers, mostly Britishers but with a number of Han Chinese, who moved to the United Kingdom recently. Tested in three different experiments, the researchers found out a small but significant preference for reddish colors in the female volunteers. Puzzled, the authors realized that most of the difference between men and women came in the form of a preference for green VS red in the color cards, regardless of the other slight differences such as the slightly blue ones that everyone liked. Why might this be? Evolution might offer an answer, they reason. Human color perception , the assessment of three separate color types -- red -- green -- blue-- in our vision is a relatively recent addition to our line of mammals Adding weight to their argument, they found the women who are most typically feminine on a psychological survey also had the biggest preference for reddish colors. "My love is like a red, red rose," wrote the Scottish poet Rober Burns in 1794. Question: The word "pair" in Para.4 refers to _ . Answer:
A:
output: the two authors

input: OPTIONS:
- US presidents on holiday.
- Relationship between work and play.
- Famous US presidents.
- Suggestions on spending holidays. Now, answer this question: Read the following article and answer the question. Article: All work and no play makes Jack a dull boy. That saying holds true not only for you and me, but also for some of the most powerful and influential people in the world, such as the presidents of the United States. But how do American presidents spend their vacation time? Let's take a look! Franklin D. Roosevelt, considered one of the greatest presidents in American history, had limited vacation options because of his polio . He began visiting Warm Springs, Georgia in 1924 for its curative waters and later built a 2,000 acre polio treatment center nearby. He liked to cruise the Potomacon his yacht and three times as president returned to his beloved Canadian island of Campobello, with which he fell in love as a kid. Former President Bill Clinton, however, was never much good at vacationing. His staff had to practically force him to go on vacation his first year in office; his idea of relaxing was reading four good books simultaneously while enjoying a cigar (chewed, not smoked). He could also lose himself in a game of golf, where his somewhat flexible interpretation of the rules could at times drive his partners crazy. Obama's predecessor also knows how to relax. Fishing is in the Bush family DNA: for blue sharks off the coast of Maine or anything with fins, almost anywhere else. George W. Bush also relaxed as president by jogging and clearing brush on his Texas ranch. Since leaving office, he has become an active mountain biker and, more recently, has taken up painting. Obama tends to take a winter break in Hawaii, where he was born and raised, and a summer vacation in Martha's Vineyard, off the southern coast of Cape Cod, Massachusetts. In between, he plays basketball every couple of weeks and has been known to do some skeet shooting at Camp David. Obama's favorite pastime, no matter the location, has become easy to spot: golf. Question: What's the passage mainly about? Answer:
A:
output: US presidents on holiday.

input: OPTIONS:
- he never thought he could meet a multimillionaire in his bank
- he thinks the businessman is crazy to leave his car in the bank
- he never thought the businessman could drive a Rolls Royce
- he thinks $5,000 is so small a sum of money to the businessman Now, answer this question: Read the following article and answer the question. Article: A businessman walks into a bank in San Francisco and asks for the loan officer. He says he is going to Europe on business for two weeks and needs to borrow $5,000.The bank officer says the bank will need some kind of security for such a loan. So the businessman hands over the keys to a Rolls Royce parked on the street in front of the bank. Everything checks out, and the bank agrees to accept the car as collateral for the loan. An employee drives the Rolls into the bank's underground garage and parks it there. Two weeks later, the businessman returns, and repays the $5,000 and the interest, which comes to $15.41. The loan officer says, "We are very happy to have had your business, and this transaction has worked out very nicely, but we are a little puzzled. While you were away, we checked you out and found that you are a multimillionaire. What puzzles us is that why would you bother to borrow $5,000?" Laughing, the businessman replies, "Where else in San Francisco can I park my car for two weeks for $15?" Question: The loan officer is puzzled because _ . Answer:
A:
output:
he thinks $5,000 is so small a sum of money to the businessman