In this task, you're given an article and an answer. Your task is to generate the question for the answer based on the given article.

Q: Article: Astronomers say they are on the point of finding planets like Earth orbiting other stars, which is a key step in determining if we are alone in the universe. A top NASA official and other leading scientists say that within four or five years they should discover the first Earth-like planet where life could develop, or may have already. A planet close to the size of Earth could even be found sometime this year. At the annual American Astronomical Society conference this week, each discovery involving so-called "exoplanets" --those outside our solar system -- pointed to the same conclusion:Quiet planets like Earth where life could develop probably are plentiful. NASA's Dew Kepler telescope and a lot of new research from the suddenly hot and competitive exoplanet field caused noticeable buzz at the meeting.Scientists are talking about being at "an incredible special place in history" and closer to answering the question. "Are we alone? For the first time, there's an optimism that sometime in our lifetimes we're going to _ that," said Simon Worden,an astronomer who heads NASA's Ames Research Center. "If I were a betting man, which I am, I would bet we're not alone." "These are big questions that reflect upon the meaning of the human race in the universe," the director of the Vatican Observatory, the Rev. Jose Funes, said Wednesday in an interview at this week's conference. Worden told The Associated Press: "I would certainly expect in the next four or five years we'd have an Earth-sized planet in the habitable zone."
Answer: Finding an Earth-like planet

A: What is very important in determining if we are alone in the universe?
****
Q: Article: John Milton, the most learned poet, is the greatest writer of the seventeenth century and one of the giants of English literature as a whole. He was greatly influenced by two historical movements of Renaissance and Reformation. Like Spenser and Shakespeare, he was also one of the Renaissance giants not only in England but also in the whole world. Almost all later poets in English literature respected Milton highly. Milton _ over his age as Shakespeare towers over the Elizabethan age, and as Chaucer towers over the medieval period. John Milton was born in London in 1608. His education began at St. Paul's School, where he was very hard-working, where he showed wonderful gifts as a student of languages mastering Greek, Latin, Hebrew and many modem European languages. He also received very good home education under the influence of his father who was a Puritan and a lover of music and literature. He attended Christ's College, Cambridge University, where he was very popular because of his handsomeness and talent, where he explained the true aim of knowledge as making the spirit of man "reach out far and wide, until it fills the whole world and the space far beyond with the expansion of its greatness", where he graduated with B.A. in 1962 and M. A. in 1963.
Answer: Spenser, Shakespeare and John Milton had the friendly relationship between them.

A: According to the passage, which of the following is NOT true?
****
Q: Article: The woman at the airline ticket counter in prefix = st1 /Munich,Germany, just shook her head. "I'm sorry, but there's no more availability on this flight," she said. God, I thought. My husband, Bob, and I had enjoyed every moment of our dream vacation, two weeks in Europe, but I was ready to go home toShreveport,Louisiana, and sleep in my own bed. Bob could see how frustrated I was. "We'll just have to try to get on the flight tomorrow," he said. "Let's enjoy the extra day." My son Joe, a First Lieutenant in the Army 82nd Airborne Division , would be returning to Ft. Bragg in North Carolina for a short rest and recovery from his tour of duty in Baghdad, and we weren't sure we'd be able to see him in the little time he'd be stateside. Plus, the time was so up in the air! Back at our hotel, I checked my e-mail to see if our daughter-in-law Monica had any news on when Joe was due to arrive. Sure enough, there was a message. "Joe's been delayed again," it read. The next morning we made it onto our flight back to the States. Unfortunately, we had to stop in Atlanta. Our connecting flight there was delayed because of bad weather. The hours passed. I felt the frustration building. "That's it!" I finally said. "I just want to get home!" That's when I saw a group of soldiers coming down the ramp from one of the gates. I thought of Joe. They're coming back from a war, I reminded myself, while I'm coming back from vacation. What right do I have to be frustrated? Maybe the troops were God's way of reminding me to trust in his time. Bob grabbed my arm. "Look at those soldiers coming down the ramp." "I see them," I said. Bob persisted, "Do you see who's in front?" Suddenly, all those delays across all those miles made perfect sense. I rushed toward my son Joe's open arms.
Answer: To cheer his wife up.

A:
Why did Bob say "Let's enjoy the extra day"?
****