TASK DEFINITION: In this task, you are given news articles and you need to generate a highlight, i.e., a short summary, with a maximum length of 10 lines.
PROBLEM: (CNN) -- It was the moment the world had been waiting for, and as he has so often in his glittering career, Lionel Messi delivered. After a frantic opening to the World Cup in Brazil with entertainment and goals aplenty, one of its gold-plated stars announced his arrival in style. A trademark slaloming run from the Barcelona striker ended in the fashion soccer fans have become well accustomed to -- with the net rippling. In truth, Argentina were far from their best against the World Cup debutantes Bosnia and Herzegovina despite going 1-0 up thanks to the quickest goal at the World Cup to date. Sead Kolasinac was the unwitting scorer, diverting the ball into his own net after a Messi free kick was glanced on by Marcos Rojo. Alejandro Sabella's men couldn't build on that early lead though as Bosnia and Herzegovina held their own until the interval. Argentina's lead was doubled on 65 minutes thanks to a piece of magic from their talisman. Messi swapped passes with Gonzalo HiguaÃ­n and sidestepped two challenges before firing home off the inside of the post via a slight deflection. His vigorous celebration perhaps showed the pressure he was under to perform, as the endless comparisons to Argentina's other world famous player -- Diego Maradona -- go on. A goal from substitute Vedad Ibisevic ensured a nervy final six minutes but Argentina held out to secure three important points. France 3-0 Honduras . The first World Cup goal to be awarded via goal-line technology helped France to a convincing 3-0 victory over 10-man Honduras in Porto Alegre. Karim Benzema, who had put France ahead thanks to a first half penalty, fired a shot against the post only for Honduras keeper Noel Valladares to inadvertently nudge the ball towards goal. It was awarded by the referee after goal-line technology -- introduced for the first time at this World Cup by FIFA -- instructed him the ball had crossed the line. Replays inside the stadium led to boos from some supporters, as the big screen flashed up 'no goal' for the initial effort that hit the upright, then 'goal' after the ball had cannoned off Valladares. Aside from the confusion it was a routine win for an energetic France side, whose task was made easier when Honduras went down to 10 men. Wilson Palacios, who plays for English Premier League side Stoke, had already been booked when he barged into Paul Pogba, conceding a penalty and attracting a second booking. Benzema duly dispatched the spot kick as France seized the initiative just before the interval. Then just three minutes after the break came a landmark moment for the world game when Benzema's volley from an exquisite Yohan Cabaye pass flashed back off the post. Valladares tried to parry the ball clear as it hurtled towards him but only succeeded in flicking it over the line, the referee confirming the goal a few seconds later. Honduras protested and the replays led to confusion but the goal was awarded, four years after the incident in South Africa that led FIFA president Sepp Blatter to change his mind on technology. A shot from England's Frank Lampard flicked off the bar and bounced down a yard over the line in their quarterfinal with Germany but the goal wasn't awarded. There was no doubt about Benzema's second, as he fired emphatically into the roof of the net after pouncing on a loose ball, completing a perfect opening night for France coach Didier Deschamps. Switzerland 2-1 Ecuador . The other game in Group E on Sunday was a tale of two super subs for Switzerland as an injury time winner from Haris Seferovic broke Ecuadorian hearts in Brasilia. The striker came off the bench to pounce in the dying seconds of the game after another sub -- Admir Mehmedi -- had canceled out Enner Valencia's early header. It meant that after nine matches at the World Cup, there is still to be a draw. After a low key opening it was Ecuador who struck first, as Enner Valencia planted a firm header into the net from Walter Ayovi's center. Switzerland, tipped by many as World Cup dark horses, struggled to get into any sort of rhythm and squandered a succession of set pieces. But its two-time European Champions League winning coach Ottmar Hitzfeld got his half time tactical tinkering just right and it drew level within minutes of the restart. Hitzfeld brought striker Admir Mehmedi on for Valentin Stocker and the Freiburg forward nodded home from close range. Swiss goalkeeper Diego Benaglio saved well from Jefferson Montero before Josip Drmic had a goal ruled out for offside as the match neared a dramatic conclusion. Ecuador had a great chance to find the net but Michael Arroyo was tackled brilliantly by Valon Behrami, who then launched a counter attack. The referee played an excellent advantage after Behrami was fouled and the move ended with Seferovic finishing off Ricardo Rodriguez's low cross. "We've done it, and that's unbelievable," Hitzfeld was quoted as saying by FIFA's website. "We never stopped believing in ourselves. I'm extremely happy with the three points and it means it's a good start."

SOLUTION: Lionel Messi announces his World Cup arrival with brilliant goal for Argentina .
Messi's strike lifts Argentina to a 2-1 win over Bosnia and Herzegovina .
Benzema brace helps France beat 10-man Honduras 3-0 in Group E .
Match sees first World Cup goal awarded via the use of goal-line technology .

PROBLEM: (CNN) -- A young woman stands against a crisp black backdrop. The photographer walks forward and gently turns her away from the camera. Today the focus is not on her face but on the delicate architectural feat that sits atop her head. It seems to almost defy gravity, with light radiating from the hair tower as it spirals upwards in a conical shape. Hairstyles have long been popular fashion statements for Nigerian women. But over the years, the intricate braiding and eye-catching sculptures have often reflected the country's changing sociopolitical times as well. And for the last six decades, one man made it his life's work to capture the complex refashioning of his homeland. In February, the renowned artist J.D. 'Okhai Ojeikere died at his home in Lagos aged 84. He left behind a remarkable body of work, much of which is largely unknown outside Nigeria. But now, many of Ojeikere's countrymen are putting in a renewed effort to celebrate the life of the beloved artist -- through documentary films, exhibitions and an impressive monograph of work, Nigeria is presenting J.D. 'Okhai Ojeikere to the world one last time. "He started taking images of a nation that was in the throes of development [and] independence in 1960," explains Bisi Silva, the founder and director of the Centre for Contemporary Art, Lagos. "We discovered oil, money... modern buildings were going up. So he documented that process, that transition into a modernizing nation." A final wish for a departed friend . Over the last five years, Silva has been working tirelessly to complete an extensive monograph on Ojeikere. This has not been yet another project for the art curator -- Ojeikere was a close friend, and the duo had been collaborating on the monograph up until his untimely passing in February. "I had a very close relationship with 'Pa Ojeikere,' as we call him here," says Silva, who turned to crowdfunding platform Kickstarter to raise funds for publishing the book. "I used to speak to him at least once a week." Silva recalls Ojeikere's passion and enthusiasm for the project and, holding it close to her heart, she says she's determined to finish what they had started together. "He was really dynamic, really passionate about photography and there was so much to learn in his archive. Over the last five years, we became friends. He was like a father to me. "It was just such a big shock that he passed away. That he wouldn't see the book he was extremely excited about." Documenting independence . Born in a small rural village in West Nigeria in 1930, Ojeikere would become one of Nigeria's most celebrated artists. For over 60 years, the master photographer fastidiously immersed himself in capturing his homeland, documenting every facet of daily life. His many photographs would come together to create a striking anthropological study of Nigeria. The 1950s saw a young Ojeikere searching for a vocation. Rejected by the army, it was an uncle who inadvertently put him on a lifelong journey by suggesting photography. Starting small, the untrained amateur would photograph women in his village as they donned their Sunday best and headed to church. Later on, Ojeikere got a job as a darkroom assistant at the Nigerian Ministry of Information. When he wasn't working, he was often found at the local university, snapping moments between students, staff and events on campus -- once again capturing daily life on film. The country was moving toward a time of social change and political upheaval and Ojeikere explored this through his lens. "You're getting a sort of history of Nigeria at a very important, transitional period, just on the cusp of independence," says Silva. "And just after independence [in 1960], when there is a feeling of euphoria, feeling of liberation, the sense of 'now we can conquer the world, we can develop the nation; we are free, we are independent.' "And this all comes out in the way in which individuals and people presented themselves. It's like: 'Look at me. I'm fashionable, I'm modern, I'm confident, I'm educated. I'm a professional.' All these images amount to a visual image of Nigeria in the 50s, 60s and 70s." Not just hair . Ojeikere's next job was working for the national television station, a career move that enabled him to rub shoulders with other creative minds. This is when he started to take photographs with more artistic intent, explains Silva. "He started coming into contact other artists, filmmakers, writers and that's why as he developed, the artistic intent as opposed to the anthropological intent began to develop. When we finally get to 'Hairstyles,' they are actually done in a very specific manner. It wasn't someone on the street. It was in a studio with a specific lighting, with a specific position." The "Hairstyles" series, for which he is so critically acclaimed, features over 1,000 photographs of Nigerian styles since 1954. But for Silva, his work documenting traditional Nigerian headgear and the country's architecture, as well as his studio portrait work, must be examined alongside "Hairstyles" to fully comprehend Ojeikere's legacy. The images communicate a transition from the normal photographs depicting Africa, says Silva. "The images we are used to seeing of Africa -- they gave a one dimensional perspective of a race, of a nation, of a people. It's been a herculean work to bring this publication together." Final tributes . Silva's monograph is just one tribute to Ojeikere. Nigerian filmmaker Tam Fiofori recently released "J.D. 'Okhai Ojeikere: Master Photographer," a documentary capturing the final year of the artist's life. Elsewhere, an exhibition of "Hairstyles" is currently shown across the UK. Curated by Gillian Fox, it is the first time audiences in the country are having the chance to view Nigeria from this perspective. "As a Nigerian, he wanted to document that moment in Nigeria when it was a time of colonial rule changing over to democracy," says Fox. "He was keen in the wake of modernization to capture something that was quite intrinsic to his culture, his nation and he saw the rate of change that was happening and he thought hairstyles were fascinating and an art form in their own right," she continues. "They were something that should be preserved because the thing about a hairstyle is that they are really ephemeral." She adds: "I think it was a love letter to his country. He used photography which is a very modern medium to document these moments of social change." Click through the gallery above to explore some of Ojeikere's iconic photographs.

SOLUTION: Ojeikere was a Nigerian photographer who passed away in February .
Throughout his life, he took thousands of pictures cataloging the changing times of his nation .
Monograph from Centre for Contemporary Art, Lagos will showcase the work .

PROBLEM: WASHINGTON (CNN) -- The man who revealed that Valerie Plame worked for the CIA said that he was "extraordinarily foolish" to leak her name. Former Deputy Secretary of State Richard Armitage was a source of the CIA leak to columnist Robert Novak. Former Deputy Secretary of State Richard Armitage told CNN's Wolf Blitzer in an interview broadcast Sunday that he did not realize Plame was a covert agent when he discussed her with syndicated columnist Robert Novak. Novak, a former CNN contributor, wrote the July 2003 column in which Plame was named as a CIA employee. He later cited his sources as Armitage and Karl Rove, then President Bush's top political adviser. Armitage said he had seen a memo that said Plame was publicly chairing a meeting, so he assumed her CIA employment was not a secret. "There was no ill intent on my part, and I had never seen, ever in 43 years of having a security clearance, a covert operative's name in a memo," he said.  Watch Armitage explain why he leaked Plame's name » . Blitzer asked Armitage if he "simply assumed that she was not a clandestine officer of the CIA." "Well, even Mr. Novak has said that he used the word 'operative' and misused it," Armitage said. "No one ever said 'operative.' And I not only assumed it, as I say, I have never seen a covert agent's name in a memo. However, that doesn't take away from what Mrs. Plame said. It was foolish, yes." Rove, who left the White House in August, has denied he was also a source of the leak to Novak. Plame's identity was disclosed shortly after her husband, former U.S. Ambassador Joseph Wilson, challenged one of the chief claims underpinning the Bush administration's case for the U.S. invasion of Iraq -- that Iraq had sought uranium for nuclear weapons from the African country of Niger. In an op-ed piece for The New York Times, Wilson wrote that he had investigated the claim at the request of CIA officials and found it "highly doubtful" that any such transaction could have occurred, and he accused the Bush administration of having "twisted" the evidence for war. Neither Armitage nor Rove was charged with a crime in the leak. Wilson and Plame have accused Rove and other Bush officials of leaking her identity as a CIA officer in retaliation for her husband's emergence as an administration critic. A federal judge in Washington recently dismissed a lawsuit by the couple against Rove, Armitage, Vice President Dick Cheney and Cheney's former chief of staff, Lewis "Scooter" Libby. Libby was convicted of obstructing justice and perjury in the probe and sentenced to 30 months in prison, but Bush commuted his term before he had served any time. E-mail to a friend .

SOLUTION:
Richard Armitage says he had "no ill intent" when he revealed CIA agent's name .
Armitage revealed Valerie Plame's identity to columnist Robert Novak .
Former State Department official says he didn't know Plame was covert agent .
Plame's husband -- Joseph Wilson -- was critical of Bush administration's Iraq policy .