user: Question: What is Home Team, when Tie No is 4?
Columns: ['Tie no', 'Home team', 'Score', 'Away team', 'Date']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['1', 'West Bromwich Albion', '0–1', 'Birmingham City', '18 February 1956']
SQL:

assistant: SELECT "Home team" FROM "Table" WHERE "Tie no" = '4';