How many season numbers are there for the episodes written by Art Everett?
CREATE TABLE table_2226817_6 (no_in_season VARCHAR, written_by VARCHAR)
SELECT COUNT(no_in_season) FROM table_2226817_6 WHERE written_by = "Art Everett"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_2226817_6 (no_in_season VARCHAR, written_by VARCHAR) Question: How many season numbers are there for the episodes written by Art Everett? [/INST] SELECT COUNT(no_in_season) FROM table_2226817_6 WHERE written_by = "Art Everett" </s>