What are the years employed shown for mathematics & prefect master?
CREATE TABLE table_name_74 (employed VARCHAR, position_held VARCHAR)
SELECT employed FROM table_name_74 WHERE position_held = "mathematics & prefect master"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_74 (employed VARCHAR, position_held VARCHAR) Question: What are the years employed shown for mathematics & prefect master? [/INST] SELECT employed FROM table_name_74 WHERE position_held = "mathematics & prefect master" </s>