user: Question: Which team was the visitor with a record of 5-2-0?
Columns: ['Date', 'Visitor', 'Score', 'Home', 'Record', 'Attendance']
Types: ['text', 'text', 'text', 'text', 'text', 'real']
Sample row: ['September 29', 'Chicago Cardinals', '20-10', 'San Francisco 49ers', '0-1-0', 35743.0]
SQL:

assistant: SELECT "Visitor" FROM "Table" WHERE "Record" = '5-2-0';