user: Question: What is the total years for Roots and Branches?
Columns: ['Year', 'Title', 'Billboard Hot 100', 'Album', 'Label']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1963.0, 'Dooley', '—', 'Back Porch Bluegrass', 'Elektra']
SQL:

assistant: SELECT SUM("Year") FROM "Table" WHERE "Album" = 'Roots and Branches';