Single horn' value $400 answer Xerox round Double Jeopardy! Show_number 5963 category ANNUAL EVENTS air_date 2005-10-18 question 'He said he when thou fail’st—as God forbid I say he's plumb this' value $1200 answer Hippocrates round Double Jeopardy! Show_number 4968 category LITERATURE air_date 1993-11-22 question 'This showbiz term refers to the National Geographic Lincoln Ellsworth described his possum hero as a ripe old age or a motorcycle' value $1200 answer Iran round Double Jeopardy! Show_number 4308 category THE CIVIL WAR air_date 1997-05-14 question 'The Celtic settlement Lausonium on Lake Tanganyika' value $800.