user: Question: What are all classes for the position SLB?
Columns: ['Position', 'Number', 'Name', 'Height', 'Weight', 'Class', 'Hometown', 'Games↑']
Types: ['text', 'real', 'text', 'text', 'text', 'text', 'text', 'real']
Sample row: ['LE', 99.0, 'Jeremy Jarmon', '6\'3"', '277lb.', 'Jr.', 'Collierville, Tennessee', 1.0]
SQL:

assistant: SELECT "Class" FROM "Table" WHERE "Position" = 'SLB';