CREATE TABLE table_42447 ("Year" FLOAT, "Title" TEXT, "Producer" TEXT, "Actor" TEXT, "Role" TEXT)

What's the average year for the Role of alvin seville simon seville david 'dave' seville, and a Title of the chipmunk adventure?
SELECT AVG("Year") FROM table_42447 WHERE "Role" = 'alvin seville simon seville david ''dave'' seville' AND "Title" = 'the chipmunk adventure'
SELECT AVG("Year") FROM "table_42447" WHERE "Role" = 'alvin seville simon seville david \'dave\' seville' AND "Title" = 'the chipmunk adventure'