Table: election_results_1920
Columns: district
incumbent
party
first_elected
result
candidates

Question: What year was incumbent william f. stevenson first elected?
SQL: SELECT "first_elected" FROM election_results_1920 WHERE "incumbent" = 'William F. Stevenson'

Question: What is the last year on this list someone was first elected?
SQL: SELECT MAX("first_elected") FROM election_results_1920

Question: What candidate was featured in the election for incumbent samuel j. nicholls' seat?
SQL: SELECT "candidates" FROM election_results_1920 WHERE "incumbent" = 'Samuel J. Nicholls'

Question: What is the last year incumbent frederick h. dominick was first elected?
SQL: SELECT MAX("first_elected") FROM election_results_1920 WHERE "incumbent" = 'Frederick H. Dominick'