user: Question: In what year was BBC 2 13th in rank?
Columns: ['Year', 'Broadcast date', 'BBC One total viewing', 'BBC One Rank', 'BBC Two total viewing', 'BBC Two Rank']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['1999', '12 March', '6,830,000', '20th', '3,130,000', '13th']
SQL:

assistant: SELECT "Year" FROM "Table" WHERE "BBC Two Rank" = '13th';