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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.
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Article: Events in New Jersey (From April 11th-23rd) Bloomfield Public Library, 90 Broad Street.(973)566-6200. "Catch Me if You Can", starring Leonardo DiCaprio.Monday, April 11th "The Invention of Lying", comedy.Thursday, April 14th, 8 p.m. "Sideways", starring Paul Giamatti.April 18 "Phone Call From a Stranger", with Bette Davis.April 21 All are Free. Studio Montclair, 33 Plymouth Street.(973)744-1818. "Sustainability and the Artistic Vision", group show featuring artists who use sustainable materials. Through April 23. Mondays through Saturdays, 9 a.m.to 5 p.m., or by appointment. The Community Theater, 100 South Street.(973)539-8008. Russian National Ballet Theatre presents "Chopiniana" and "Romeo and Juliet". April 15, at 8 p.m. $27 to $57. Essex County Environmental Center, 621 Eagle Rock Avenue.(973)228-8776. "New Jersey Wood-turners", adults learn to create art from pieces of wood found in nature. April 18 at 7 p.m. $8; members, free. Monmouth Museum, 765 Newman Springs Road.(732)747-2266. "Give Peace a Chance: John Lennon and Yoko Ono's Bed-in for Peace Exhibition", featuring more than 40 large-format images by the photojournalist Gerry Deiter. Through April 22. $7; children under 2, free. Tuesdays through Fridays, 10 a.m.to 4:30 p.m. William Paterson University, 300 Pompton Road.(877)978-3923. "The African Impact on the American Experience: Between Race and Culture", panel discussion moderated by Prof.Lawrence Mbogoni. Tuesday, April 12 at 12:30 p.m. American Labor Museum, 83 Norwood Street.(973)595-7953. "The Line That Divides: _ Trade Corridor", exhibition of photographs, paintings and video by Pamela Calore. Through April 23. Wednesdays through Saturdays, 1 to 4 p.m., or by appointment. $3 to $5; members and children under 12, free.
Answer: (973)566-6200
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Which of the following number can offer you more information if you show interest in John Lennon and his wife?

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Article: Bear Story Campers Gene and Marie Marsden took pride in being good citizens when in the wild.While driving miles to the Green River Lakes area,they instructed their children in the rules they'd learned in the bear safety handbook put out by the Bridger-Teton Forest Service.The number-one rule was"Don't feed the bears!"-whether intentionally or not.Warning the kids not to go anywhere near a bear,the Marsdens had no problem with the intentional part,but the unintentional part was not as easy to avoid as they thought. Mr.and Mrs.Marsden did their best to keep a tidy camp.While the handbook had said to hang all food at least ten feet off the ground,they did that and locked their food in their trailer at night.Afraid that the scent of the bait might attract a bear,they even locked up Marie's fishing pole.Being sure nothing was left out,they went to bed. Gene says he now regrets not having taken their dog Spike into the tent at night,but they liked having him on guard.On the night of the encounter ,Spike would not stop barking,and Marie knew he must be sounding the alarm on something more dangerous.When she unzipped the tent and shone her flashlight,she saw a young bear. They all piled into the car and drove quickly down the trail.They drove to a pay phone twenty miles away and called a Fish and Game Department ranger,who identified the bear by the white ruff the Marsdens had seen around his neck.The authorities informed the Marsdens that the bear was a young male that they'd been keeping an eye on. The next morning,the Marsdens heard helicopters circling over the mountain and wondered if it might have something to do with the bear.After spending the night in the public campground,they drove back to their site.Wandering the area in search of clues,Marie came to a stop below a tallest tree.She slapped her head and shouted,"Oh no!" "What is it?"Gene asked. Marie pointed at the ground where Spike's dog food bowl lay upside down. A week after their return home,the Marsdens read the headline in their local paper."Bear Euthanized in Wind Rivers."According to the article,the Fish and Game Department had shot the young bear because,having been rewarded for invading a human campsite,it would likely do so again. The Marsdens knew they had been lucky in the encounter,yet much to their shame and sadness,they also knew that the bear had not.
Answer: The Fish and Game Department.
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Who is mostly to blame in the bear's death according to the writer?

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Article: Baroness Thatcher, Britain's greatest post-war prime minister, died at the age of 87 after suffering a stroke (a disease related to blood vessels in the brain), her family announced on 8 April 2013. Her son, Sir Mark, and daughter Carol confirmed her death that morning. zxxk Margaret Thatcher, daughter of a businessman and mayor of Grantham, was educated at the local grammar school, and at Oxford, where she got a degree in chemistry, and upon graduation she worked for four years as a research chemist. She then qualified as a lawyer in 1954. As Miss Margaret Roberts, she stood twice in parliamentary elections for the Conservative Party , before being elected (after her marriage) to the House of Commons in 1959. When the Conservatives returned to office in June 1970, she was appointed secretary of state for education and science. After the Conservatives lost power in 1974, she was appointed to the Shadow Cabinet , and was elected leader of the Conservative Party in 1975. Baroness Thatcher became prime minister on 4 May 1979 and went on to earn the nickname "the Iron Lady", becoming known for her strong responses to the political and economic crisis, which Thatcher's supporters think are good for Britain, while her opposers argue that her policies destroyed British manufacturing. Lady Thatcher governed Britain from 1979 to 1990. She will go down in history not only as Britain's first female prime minister, but as the woman who changed Britain's economy in addition to being an awesome rival on the international stage. zxxk Lady Thatcher was the only British prime minister to leave behind a set of ideas about the role of the state which other leaders and nations try to copy and apply.
Answer: 53
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How old was Lady Thatcher when she became prime minister?