The release of 52 hostages from which country on January 20, 1981, made world headlines?

Lake Assal, about 500 feet below sea level, is the lowest point on which continent? Which rock band's 1986 album was titled "5150"? Lake Eyre, about 50 feet below sea level, is the lowest point on which continent? Which San Francisco Giant hit 52 home runs in 1965? Which Broadway musical asks "525,600 minutes, how do you measure a year?" Which Roman emperor, who ruled from AD 54 to 68, was said to have "fiddled while Rome burned"? Which carmaker has built the 550 Spyder, the 944 and the Boxster? Which Seattle Mariner hit 56 home runs in 1997?