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
Show the names of people that are on affirmative side of debates with number of audience bigger than 200.
[Schema (values) (types)]: | debate |  people : people_id (text) , district (number) , name (text) , party (text) , age (text) | debate : debate_id (text) , date (number) , venue (text) , num_of_audience (text) | debate_people : debate_id (text) , affirmative (number) , negative (text) , if_affirmative_win (text);