-- Database schema
| artist : Artist_ID [ INT ] primary_key , Name [ TEXT ] , Country [ TEXT ] , Year_Join [ INT ] , Age [ INT ] | exhibition : Exhibition_ID [ INT ] primary_key , Year [ INT ] , Theme [ TEXT ] , Artist_ID [ INT ] exhibition.Artist_ID = artist.Artist_ID , Ticket_Price [ INT ] | exhibition_record : Exhibition_ID [ INT ] primary_key exhibition_record.Exhibition_ID = exhibition.Exhibition_ID , Date [ TEXT ] , Attendance [ INT ] |
-- -- Show all artist names with an average exhibition attendance over 200.

SELECT T3.name FROM exhibition_record AS T1 JOIN exhibition AS T2 ON T1.exhibition_id  =  T2.exhibition_id JOIN artist AS T3 ON T3.artist_id  =  T2.artist_id GROUP BY T3.artist_id HAVING avg(T1.attendance)  >  200;