What year was incumbent william f. stevenson first elected?
CREATE TABLE table_1342451_38 (first_elected VARCHAR, incumbent VARCHAR)
SELECT first_elected FROM table_1342451_38 WHERE incumbent = "William F. Stevenson"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_1342451_38 (first_elected VARCHAR, incumbent VARCHAR) Question: What year was incumbent william f. stevenson first elected? [/INST] SELECT first_elected FROM table_1342451_38 WHERE incumbent = "William F. Stevenson" </s>