Which 1998 hit for Will Smith won the Grammy for Best Rap Solo Performance?

A 1998 CD of music from which sitcom featured "Cleveland Rocks" and "Five O'Clock World"? A 1998 experiment heated deuterium, a form of which element, in an effort to make it become a metal? A 1998 federal study estimated that at least 92,000 crashes a year are prevented by a car's third, center-mounted one o… Complete the title of the 1998 film about musician sisters: "Hilary and ___". A 1998 law authorized the Park Service to spend $500,000 a year to link sites on which 19th-century escape route? A 1998 letter from which longtime head of the Motion Picture Association of America praised China's crackdown on piracy? A 1998 strike centered at Ulsan, in which country, saved about 1,300 Hyundai jobs? Complete the title of the 1998 World War II film: "The Thin ___ Line".