Polish officials may force a PR agency to remove a giant Coca-Cola advertisement, even though the agency claims it could make it into the Guinness Book Of Records.The advertisement is 41.1m by 58m in size and hangs over Warsaw's main intersection and features a girl's face and a soda bottle.The Hator Agency is claiming such a huge advertisement is a rare tourist attraction and is hoping to get it listed as a world record.But officials at Warsaw's district authorities are not happy and say such advertising is inappropriate in the heart of the city.A spokesman for the agency said: "An artistic vision cannot be assessed by office clerks."Sarah Diston