When was the Tennessee 3 district incumbent first elected? 
CREATE TABLE table_1342233_42 (first_elected INTEGER, district VARCHAR)
SELECT MAX(first_elected) FROM table_1342233_42 WHERE district = "Tennessee 3"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_1342233_42 (first_elected INTEGER, district VARCHAR) Question: When was the Tennessee 3 district incumbent first elected?  [/INST] SELECT MAX(first_elected) FROM table_1342233_42 WHERE district = "Tennessee 3" </s>