user: Question: what is the original channel when the year is before 2006 and the note is Supporting?
Columns: ['Year', 'Title', 'Original channel', 'Role', 'Note']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [2003.0, 'Yankee Bokou ni Kaeru', 'TBS', 'Noriyuki Takahashi', 'Co-star']
SQL:

assistant: SELECT "Original channel" FROM "Table" WHERE "Year" < 2006.0 AND "Note" = 'Supporting';