user: Question: What is Tie no, when Home Team is "Gillingham"?
Columns: ['Tie no', 'Home team', 'Score', 'Away team', 'Date']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['1', 'Chester City', '3–1', 'Doncaster Rovers', '6 December 1986']
SQL:

assistant: SELECT "Tie no" FROM "Table" WHERE "Home team" = 'Gillingham';