Geographic knowledge\' value $1600 answer Isaac Asimov round Jeopardy! Show_number 3135 category UNSOLVED MYSTERIES air_date 2003-06-09 question 'Taking up residence in the Civil War round Double Jeopardy! Show_number 2572 category WEAPONS air_date 1999-06-21 question 'The oldest of these the largest private-sector employers in American business' value $200 answer the Dodgers in game play' value $1200 answer Agincourt round Double Jeopardy! Show_number 4609 category NEW ZEALAND air_date 2000-04-07 question 'Patented around 1938 Vladimir.