user: Question: Name the parent unit for Josef Priller
Columns: ['Parent unit', 'Geschwader Base', 'Unit (Gruppe/Staffel)', 'Aircraft Type', 'Commanding Officer']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Jagdgeschwader 1', 'Twenthe / Drope / Rheine', 'Stab and I./II./III. Gruppe', 'Fw 190 and Bf 109', 'Herbert Ihlefeld']
SQL:

assistant: SELECT "Parent unit" FROM "Table" WHERE "Commanding Officer" = 'Josef Priller';