user: Question: Which Series has an Actor of Tom Ward?
Columns: ['Character', 'Actor', 'Years', 'Series', 'Episode Count']
Types: ['text', 'text', 'text', 'text', 'real']
Sample row: ['Dr Nikki Alexander', 'Emilia Fox', '2004-', '8.5-', 86.0]
SQL:

assistant: SELECT "Series" FROM "Table" WHERE "Actor" = 'Tom Ward';