At the 1980 Winter Olympics, which speed skater won gold in all five events he entered, setting Olympic records in each?

At the 1953 Paris Motor Show, which famed Porsche model debuted? At the 1968 Democratic convention, which future NAACP chairman was briefly put forward for vice president? At the 1972 Munich Olympics, who swam in seven events, including relays, and won them all in world-record times? At the 1976 Olympics, Nadia Comaneci scored the first perfect 10 in Olympic gymnastics on which apparatus? At the 1984 Olympics, Zola Budd collided with which American runner in the 3,000-meter race? At the 1984 Summer Olympics, which West Virginia native won five medals in gymnastics? At the 1988 Democratic convention, Bill Clinton's nominating speech for which candidate lasted over 30 minutes? At the 1988 Democratic convention, who said "We are all precious in God's sight - the real rainbow coalition"?