user: Question: Who is the host on the series aired on 18 January 2012?
Columns: ['Country', 'Name', 'Host(s)', 'Judges', 'Network', 'Air dates']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Belgium (Dutch)', 'Junior MasterChef Belgium', 'unknown', 'Wout Bru Fatima Marzouki', 'vtm', '18 January 2012']
SQL:

assistant: SELECT "Host(s)" FROM "Table" WHERE "Air dates" = '18 January 2012';