SELECT AVG(year) FROM table_name_30 WHERE role = "alvin seville simon seville david 'dave' seville" AND title = "the chipmunk adventure"
Berapa tahun rata -rata untuk peran Alvin Seville Simon Seville David 'Dave' Seville, dan gelar petualangan Chipmunk?
CREATE TABLE table_name_30 (year INTEGER, role VARCHAR, title VARCHAR)