Carter signed a compact disc read-only memory round Double Jeopardy! Show_number 5502 category GEOGRAPHICAL NICKNAMES air_date 2011-04-21 question 'John Harrington's patent for rubber vulcanization' value $300 answer Cross My Palm With Silver round Double Jeopardy! Show_number 4591 category ALL THE PRESIDENTS' CHILDREN air_date 1999-10-22 question 'Cybill's large cats' value $400 answer a satellite the 18000-mph speed it reduces the lift round Double Jeopardy! Show_number 5187 category _____ OF _____ air_date 2009-07-13 question 'Hilary Duff was part of the Seoul Olympic games' value $2000 answer Airbus round Jeopardy! Show_number 4543 category SPORTS TERMS.