user: ### NOW ANSWER:
Question: What is Tie No, when Score is "Marlow United won 4–2 on penalties"?
Columns: ['Tie no', 'Home team', 'Score', 'Away team', 'Attendance']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['6', 'Billingham Synthonia', '5–1', 'Glasshoughton Welfare', '103']
SQL:

assistant: SELECT "Tie no" FROM "Table" WHERE "Score" = 'Marlow United won 4–2 on penalties';