Who wrote the episode which was directed by Nick Marck?
CREATE TABLE table_28195898_1 (written_by VARCHAR, directed_by VARCHAR)
SELECT written_by FROM table_28195898_1 WHERE directed_by = "Nick Marck"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_28195898_1 (written_by VARCHAR, directed_by VARCHAR) Question: Who wrote the episode which was directed by Nick Marck? [/INST] SELECT written_by FROM table_28195898_1 WHERE directed_by = "Nick Marck" </s>