List all directors when Brad Radnitz was the writer?
CREATE TABLE table_2342078_4 (directed_by VARCHAR, written_by VARCHAR)
SELECT directed_by FROM table_2342078_4 WHERE written_by = "Brad Radnitz"
### Context: CREATE TABLE table_2342078_4 (directed_by VARCHAR, written_by VARCHAR) ### Question: List all directors when Brad Radnitz was the writer? ### Answer: SELECT directed_by FROM table_2342078_4 WHERE written_by = "Brad Radnitz"