user: Question: Who narrated when the vessel operator is De Beers?
Columns: ['No. in series', 'No. in season', 'Title', 'Vessel Type', 'Vessel Operator', 'Narrated by', 'Original air date']
Types: ['real', 'real', 'text', 'text', 'text', 'text', 'real']
Sample row: [5.0, 1.0, '" MV Resolution "', 'Turbine Installation Vessel', 'MPI Offshore Ltd', 'Barbara Budd', 2009.0]
SQL:

assistant: SELECT "Narrated by" FROM "Table" WHERE "Vessel Operator" = 'De Beers';