user: ### NOW ANSWER:
Question: What is Home Team, when Date is "6 December 1986", and when Tie No is "4"?
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 "Home team" FROM "Table" WHERE "Date" = '6 December 1986' AND "Tie no" = '4';