List the names of people that have not been on the affirmative side of debates.
SELECT Name FROM people WHERE People_id NOT IN (SELECT Affirmative FROM debate_people)
SELECT Name FROM people WHERE People_id NOT IN (SELECT Affirmative FROM debate_people)
[{'Name': 'Daniel Sickles'}, {'Name': 'John Cochrane'}, {'Name': 'George Briggs'}, {'Name': 'Horace F. Clark'}, {'Name': 'John B. Haskin'}, {'Name': 'Charles Van Wyck'}]