user: Question: What was the name of the album that was a demo release?
Columns: ['Year', 'Album', 'Release type', 'Label', 'Hungarian top 40 album charts']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [2003.0, 'A walesi bárdok', 'demo', 'Self-released', '—']
SQL:

assistant: SELECT "Album" FROM "Table" WHERE "Release type" = 'demo';