When joan tewkesbury is the director what is the number in seasons?
CREATE TABLE table_18367694_3 (no_in_season VARCHAR, directed_by VARCHAR)
SELECT no_in_season FROM table_18367694_3 WHERE directed_by = "Joan Tewkesbury"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_18367694_3 (no_in_season VARCHAR, directed_by VARCHAR) Question: When joan tewkesbury is the director what is the number in seasons? [/INST] SELECT no_in_season FROM table_18367694_3 WHERE directed_by = "Joan Tewkesbury" </s>