Who is the director of the episode at entry number 13? 
CREATE TABLE table_15026994_3 (director VARCHAR, _number VARCHAR)
SELECT director FROM table_15026994_3 WHERE _number = 13
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_15026994_3 (director VARCHAR, _number VARCHAR) Question: Who is the director of the episode at entry number 13?  [/INST] SELECT director FROM table_15026994_3 WHERE _number = 13 </s>