user: Question: What is the primary sponsor of driver Mark Martin?
Columns: ['Team', 'Car(s)', 'Driver(s)', 'Primary Sponsor(s)', 'Crew Chief']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['BAM Racing', 'Dodge Charger', 'Ken Schrader', 'Schwans', 'David Hyder']
SQL:

assistant: SELECT "Primary Sponsor(s)" FROM "Table" WHERE "Driver(s)" = 'Mark Martin';