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) -- 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: BOSTON, Massachusetts (CNN)  -- The operator of a trolley that rear-ended another trolley should have been able to see the other vehicle was stopped 480 feet ahead, a federal investigator said Monday. Passengers walk past firefighters at a Green Line station in Boston after the trolley collision Friday evening. The trolley driver has told investigators he was text messaging during Friday night's collision, which injured 20 people. The Massachusetts Bay Transportation Authority, which previously had banned operators from using cell phones and other portable devices, now has told employees to leave the devices at home while on duty, National Transportation Safety Board member Debbie Hersman said Monday. Hersman also noted investigators have determined that the operator may have missed some crucial indications of a stopped trolley ahead on the tracks.  Watch new transit rule on cell phones » . "There were several signals -- two green signals, a yellow signal and a red signal -- coming out of the station, and the point of collision occurred 80 feet past that red signal," Hersman said. "We did a site-distance test, and we know that the operator had the ability to see the trolley stopped in front of him 480 feet in advance of the collision." Boston officials said over the weekend that the trolley operator was using his cell phone. Numerous media outlets, including CNN's Boston affiliates, have identified the driver as 24-year-old Aiden Quinn. "The operator of the striking train was interviewed at the hospital by two detectives," said MBTA general manager Daniel Grabauskas. "He admitted that he was texting at the time of the accident." The operator told detectives that, when he looked up, "it was too late as he applied the brake and the train struck the other trolley," Grabauskas said. He described himself as "outraged." "We have reinforced for a number of years that the use of cell phones or any other kinds of electronic devices while operating a train or a bus is absolutely prohibited," Grabauskas said. Though the investigation is ongoing, he said, the two-year employee will be fired if his version of events is confirmed. None of the injuries was considered life-threatening, the MBTA said. The collision happened at 7:18 p.m. ET Friday as the Green Line trains were traveling between the Park Street and Government Center stations in downtown Boston. Both trains were traveling westbound when one train rear-ended the second, an MBTA official said. A train operator also was text messaging last year in a California train crash that killed 25 people. CNN's Rob Frehse and Gary Bender contributed to this report.

Answer: Federal investigator says Boston trolley crashed 80 feet past a red light .
Trolley driver told investigators he was texting during wreck that injured 20 people .
Drivers already banned from using phones; authority now says keep them at home .


Question: Seoul, South Korea (CNN) -- South Korean marines detained an American man on the bank of a river bordering North Korea late Tuesday, according to a South Korean Defense Ministry official and a senior U.S. State Department official. The marines were on a regular patrol mission west of Seoul when they caught the man by the Han River in an area where it divides North and South Korea. The U.S. citizen was being interrogated Wednesday, the defense ministry official said, adding that it was not immediately known whether the American was trying to cross into North Korea. The U.S. Embassy in Seoul said it was "aware of the reports that a U.S. citizen has been detained attempting to swim from South Korea to North Korea." The Embassy said it had been in contact with South Korean authorities but didn't have any additional information to share. Americans are allowed to travel to North Korea, usually arriving by plane from Beijing. But it's forbidden to cross from South Korea into North Korea. The U.S. State Department warns citizens against all travel to the authoritarian state led by Kim Jong Un. Three U.S. citizens are currently in detention in North Korea: Kenneth Bae, Matthew Todd Miller and Jeffrey Fowle. A North Korean court on Sunday sentenced Miller to six years hard labor for committing "acts hostile" to North Korea, although the circumstances surrounding his alleged crime remain murky. Bae, a Korean-American missionary, is serving a 15-year sentence for allegedly trying to bring down the North Korean government. Fowle, who was arrested in June while traveling as a tourist, is still awaiting trial. Fast facts on detained Americans . CNN's K.J. Kwon reported from Seoul, and Jethro Mullen from Hong Kong. CNN's Paula Hancocks, Elise Labott and Josh Levs contributed to this report.

Answer:
NEW: U.S. Embassy says it's aware of reports the man was trying to swim to North Korea .
A South Korean official says not immediately clear if the man was attempting to cross the border .
He was caught on the bank of the Han River where it divides the two Koreas .