When Julian Illingworth was the under-19, who was the under-15?
CREATE TABLE table_26368963_1 (under_15 VARCHAR, under_19 VARCHAR)
SELECT under_15 FROM table_26368963_1 WHERE under_19 = "Julian Illingworth"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_26368963_1 (under_15 VARCHAR, under_19 VARCHAR) Question: When Julian Illingworth was the under-19, who was the under-15? [/INST] SELECT under_15 FROM table_26368963_1 WHERE under_19 = "Julian Illingworth" </s>