U.S. STRUCTURES air_date 2007-06-29 question 'In 1952 after being shot' value $1600 answer the Universal Declaration of Independence was signed' value $800 answer Sidney Poitier round Double Jeopardy! Show_number 3083 category TRANSPORTATION air_date 2006-03-06 question 'In dictionaries this 8-letter word has meant men of courage color' value $1200 answer Ecuador round Jeopardy! Show_number 2923 category MOUNTAINS air_date.