user: Question: Who was the director when the writer(s) was John W. Bloch?
Columns: ['Series #', 'Season #', 'Title', 'Director', 'Writer(s)', 'Original Airdate']
Types: ['real', 'real', 'text', 'text', 'text', 'text']
Sample row: [90.0, 1.0, '"The Summit-Five Affair"', 'Sutton Roley', 'Robert E. Thompson', 'September 11, 1967']
SQL:

assistant: SELECT "Director" FROM "Table" WHERE "Writer(s)" = 'John W. Bloch';