in the number of episode in season is 11, who was the writer?
CREATE TABLE table_21313498_1 (written_by VARCHAR, no_in_season VARCHAR)
SELECT written_by FROM table_21313498_1 WHERE no_in_season = 11
### Context: CREATE TABLE table_21313498_1 (written_by VARCHAR, no_in_season VARCHAR) ### Question: in the number of episode in season is 11, who was the writer? ### Answer: SELECT written_by FROM table_21313498_1 WHERE no_in_season = 11