Table: election_results_1958_4
Columns: district
incumbent
party
first_elected
result
candidates

Question: In what district is the incumbent John Bell Williams?
SQL: SELECT "district" FROM election_results_1958_4 WHERE "incumbent" = 'John Bell Williams'

Question: In what year was John Bell Williams first elected?
SQL: SELECT "first_elected" FROM election_results_1958_4 WHERE "incumbent" = 'John Bell Williams'

Question: How many districts have W. Arthur Winstead as elected official?
SQL: SELECT COUNT("district") FROM election_results_1958_4 WHERE "incumbent" = 'W. Arthur Winstead'