Who wrote episode number 18?
CREATE TABLE table_28196105_1 (written_by VARCHAR, _number VARCHAR)
SELECT written_by FROM table_28196105_1 WHERE _number = 18
### Context: CREATE TABLE table_28196105_1 (written_by VARCHAR, _number VARCHAR) ### Question: Who wrote episode number 18? ### Answer: SELECT written_by FROM table_28196105_1 WHERE _number = 18