user: Question: What episode number in the season was written by Greg Nelson and directed by Keith Samples?
Columns: ['#', 'No.', 'Title', 'Directed by', 'Written by', 'Viewers', 'Original airdate', 'Prod. code']
Types: ['real', 'real', 'text', 'text', 'text', 'real', 'text', 'real']
Sample row: [13.0, 1.0, '"Live and Let Doyle"', 'James Allodi', 'Allan Hawco', 1038000.0, 'January12,2011', 201.0]
SQL:

assistant: SELECT "No." FROM "Table" WHERE "Written by" = 'Greg Nelson' AND "Directed by" = 'Keith Samples';