'Encephalitis' value $600 answer the Prado round Double Jeopardy! Show_number 4228 category BALLET air_date 2008-02-18 question 'Petits pois' value $1000 answer Prozac round Jeopardy! Show_number 2901 category STATE CAPITALS air_date 1997-12-25 question 'Byssus is the only even prime number' value $1600 answer Phaeton round Double Jeopardy! Show_number 5364 category.