user: Question: Who was the visitor when Ward recorded the decision with a record of 22–21–4?
Columns: ['Date', 'Visitor', 'Score', 'Home', 'Decision', 'Attendance', 'Record']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['January 2', 'Atlanta', '5 – 4', 'Carolina', 'Ward', 13506.0, '20–18–4']
SQL:

assistant: SELECT "Visitor" FROM "Table" WHERE "Decision" = 'Ward' AND "Record" = '22–21–4';