SCHEMA:
CREATE TABLE table_name_18 (year INTEGER, role VARCHAR, title VARCHAR)
USER:
What's the earliest year with a role of alvin seville simon seville david 'dave' seville, and a Title of alvin and the chipmunks meet the wolfman?

QUERY:
SELECT MIN(year) FROM table_name_18 WHERE role = "alvin seville simon seville david 'dave' seville" AND title = "alvin and the chipmunks meet the wolfman"