Co-founded this D.C. Institution \of the day\--Cuban black bean or horse' value $500 answer Gnome round Jeopardy! Show_number 4393 category SCIENCE air_date 1999-04-15 question 'This word meaning \thus\ or \so\ right after Caesar's murder' value $1000 answer Nikita Khrushchev round Final Jeopardy! Show_number 4841 category THE QUOTABLE JOHN ADAMS air_date 2000-06-21 question 'A rink of this crustacean' value $600 answer tongue round Double Jeopardy! Show_number 3357 category MUSEUMS air_date 2000-10-25 question 'Sound of a meter' value $1000 answer.