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.
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Question: (CNN) -- The discovery of horse DNA in hamburgers on sale at supermarkets in Ireland and Britain is testing the appetite of meat lovers there. The Food Safety Authority of Ireland said Tuesday that 10 out of 27 hamburger products it analyzed in a study were found to contain horse DNA, and 23 of them tested positive for pig DNA. Read more: Multi-state beef recall tied to potential E. coli contamination . The horse-tainted burgers, on sale at several different supermarket chains, came from two meat processing plants in Ireland and one in Britain, the Irish authority said. "This raises concerns in relation to the traceability of meat ingredients and products entering the food chain," it said, but noted that the findings posed no risk to public health. Read more: Bacteria seen in nearly half of U.S. meat . In nine out of the 10 burger samples, the horse DNA was found at very low levels, the authority said, but in one sample from Tesco, Britain's largest retailer, the horsemeat accounted for about 29% of the burger. Tesco responded by pulling from its shelves all products from the company that had supplied the dubious burgers. Read more: How severe weather makes people go hungry . "We understand that many of our customers will be concerned by this news, and we apologize sincerely for any distress," Tesco said. The retailer is working with Irish and British authorities and the supplier to work out what had happened, it said. Alan Reilly, the chief executive of the Irish food authority, said there was a "plausible explanation" for the pig meat finding its way into the burgers, since meat from different animals is processed at the same plants. But he said there was "no clear explanation at this time" for the presence of the horsemeat. Report: Unsafe food putting lives at risk . "In Ireland, it is not in our culture to eat horsemeat and therefore, we do not expect to find it in a burger," Reilly said. "Likewise, for some religious groups or people who abstain from eating pig meat, the presence of traces of pig DNA is unacceptable." Many British and Irish people expressed their distaste over the revelations on social media. Read more: Horse -- coming soon to a meat case near you? Some Twitter users said they weren't surprised to hear about the questionable origins of the burgers, while others debated the ethics of eating horsemeat. And then there were those who saw an opportunity for attempts at humor. "Going to #tesco and expecting a beef burger. Instead you get #horsemeat . Sounds to me like foal-play," wrote Twitter user Matt Oswin under the username @BrushmanLestar.

Answer: Irish Food Safety Authority finds horse DNA in 10 out of 27 burgers it tested .
The hamburgers are on sale in supermarkets in Ireland and Britain .
The agency finds 29% of a burger from Tesco to be made of horsemeat .
Tesco says it has withdrawn from sale all products from the supplier in question .


Question: (CNN) -- Rem Koolhaas revolutionizes city landscapes with distinctive and cutting-edge buildings. Seattle's Central Library is one of Rem Koolhaas' recent builds. Responsible for the iconic CCTV headquarters in Beijing the Dutch architect was named one of "The World's Most Influential People" by Time magazine. Similar to the man himself, his buildings are not afraid to make a statement. "We felt it was very important for an entity like CCTV to make its presence felt... To generate a space and to define a space, that is the main thing," he told CNN at the opening of his "Transformer" building in Seoul, South Korea. Koolhaas admits that the current economic climate is not particularly favorable to big and bold architectural plans, but from adversity comes creativity. "Definitely there were a number of projects that we worked on put on hold, but on the other hand certain things were also accelerated because the price of construction is getting so cheap." Despite these new parameters he remains optimistic that his profession will continue to invent and be relevant, "because it means kind of smaller, but more complex and kind of interesting things, kind of related to, not necessarily with commerce, but more connected to culture and to the social world." His buildings have attracted worldwide fame and given Koolhaas himself a form of semi-celebrity status. Yet Koolhaas still feels a sense of unease being labeled a "Starchitect." "I think it's a name that is actually degrading to the vast majority of people it is applied to. And it really is a kind of political term that for certain clients is important because they use star architects. My hope is that through the current complexity that title will exit discretely and disappear," he said. He believes that by being able to respond to different demands architecture is evolving into something new. "It is not possible to live in this age if you don't have a sense of many contradictory forces," he said. "Each building has to be beautiful, but cheap and fast, but it lasts forever. That is already an incredible battery of seemingly contradictory demands. So yes, I'm definitely perhaps contradictory person, but I operate in very contradictory times."

Answer: Dutch architect is creative force behind landmark buildings across the world .
Beijing's CCTV building and Seattle's Central Library are two bold examples .
Koolhaas embraces contradictions in a project and creative-commercial tensions .


Question: Istanbul (CNN)A woman carried out a suicide bombing at a police station in Istanbul's historic Sultanahmet district Tuesday evening, killing one police officer and injuring another, officials said. The attack happened in the section of Turkey's largest city that is home to landmarks such as the Hagia Sophia and the Blue Mosque, and is heavily trafficked by tourists. The bomber, speaking English, entered the police station saying she lost her wallet, and the explosion happened at about 5:20 p.m., Istanbul Gov. Vasip Sahin told reporters. Sahin did not mention a motive for the attack. Sahin initially said that the blast, besides killing the bomber, critically injured one police officer and slightly wounded another. Later Tuesday, Turkey's semi-official Anadolu news agency reported that one of the officers died of his wounds at a hospital. Police cordoned off the area. The attacker's identity is unknown and the incident is being investigated, the governor told reporters. CNN's Gul Tuysuz reported and wrote from Istanbul, and CNN's Jason Hanna wrote in Atlanta. CNN's Hande Atay contributed to this report.

Answer:
Woman detonates bomb after saying she'd lost her wallet, Istanbul governor says .
Attacker's identity, motive not immediately known, governor says .
Attack happened at police station in popular tourism district .