who directed the episode written by Shonda Rhimes?
CREATE TABLE table_23492454_1 (directed_by VARCHAR, written_by VARCHAR)
SELECT directed_by FROM table_23492454_1 WHERE written_by = "Shonda Rhimes"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_23492454_1 (directed_by VARCHAR, written_by VARCHAR) Question: who directed the episode written by Shonda Rhimes? [/INST] SELECT directed_by FROM table_23492454_1 WHERE written_by = "Shonda Rhimes" </s>