user: Question: Which suits have No material or Non-material, Either opponent, and are Positional?
Columns: ['Positional or Automatic', 'Opponents', 'Suits', 'Material or Non-material', 'Count Rectified']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Either', 'Single', '2', 'Yes', 'Yes']
SQL:

assistant: SELECT "Suits" FROM "Table" WHERE "Material or Non-material" = 'No' AND "Opponents" = 'Either' AND "Positional or Automatic" = 'Positional';