What number in series was the episode written by Eric Gilliland?
CREATE TABLE table_27987768_1 (no_in_series INTEGER, written_by VARCHAR)
SELECT MAX(no_in_series) FROM table_27987768_1 WHERE written_by = "Eric Gilliland"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_27987768_1 (no_in_series INTEGER, written_by VARCHAR) Question: What number in series was the episode written by Eric Gilliland? [/INST] SELECT MAX(no_in_series) FROM table_27987768_1 WHERE written_by = "Eric Gilliland" </s>