user: Question: Who is the visitor in Philadelphia on March 6?
Columns: ['Date', 'Visitor', 'Score', 'Home', 'Decision', 'Attendance', 'Record']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['March 1', 'Philadelphia', '2 – 2', 'Los Angeles', 'Parent', 9534.0, '13–33–17']
SQL:

assistant: SELECT "Visitor" FROM "Table" WHERE "Home" = 'Philadelphia' AND "Date" = 'March 6';