Can you show me the names of the people who were on the affirmative side of debates with an audience bigger than 200?
SELECT T3.Name FROM debate_people AS T1 JOIN debate AS T2 ON T1.Debate_ID   =   T2.Debate_ID JOIN people AS T3 ON T1.Affirmative   =   T3.People_ID WHERE T2.Num_of_Audience  >  200
names of the people = SELECT T3.Name; on the affirmative side = JOIN ON T1.Affirmative = T3.People_ID; debates with an audience bigger than 200 = WHERE T2.Num_of_Audience > 200;