user: Question: What is the Staffel D in the season 1983-84 with a Staffel E of Motor Suhl?
Columns: ['Season', 'Staffel A', 'Staffel B', 'Staffel C', 'Staffel D', 'Staffel E']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['1971-72', 'TSG Wismar', 'Dynamo Berlin II', 'Chemie Leipzig', 'Motor Werdau', 'Rot-Weiß Erfurt']
SQL:

assistant: SELECT "Staffel D" FROM "Table" WHERE "Staffel E" = 'Motor Suhl' AND "Season" = '1983-84';