Table:
text: United States House of Representatives elections, 1918
Alabama
Alabama
District Incumbent Party First_elected Result_ Candidates
Alabama 1 Oscar Lee Gray Democratic 1914 Retired Democratic hold John McDuffie (D) Unopposed
Alabama 2 S. Hubert Dent, Jr. Democratic 1908 Re-elected S. Hubert Dent, Jr. (D) Unopposed
Alabama 3 Henry B. Steagall Democratic 1914 Re-elected Henry B. Steagall (D) Unopposed
Alabama 5 J. Thomas Heflin Democratic 1904 Re-elected J. Thomas Heflin (D) Unopposed
Alabama 6 William B. Oliver Democratic 1914 Re-elected William B. Oliver (D) Unopposed
Alabama 8 Edward B. Almon Democratic 1914 Re-elected Edward B. Almon (D) Unopposed

Question: Who was the United States House of Representatives election, 1918 incumbent when William b. oliver (d) undisputed alabama?