user: Question: What years did Representative Frank A. Oliver serve?
Columns: ['Representative', 'Years', 'State', 'Party', 'Lifespan']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ["Charles F.X. O'Brien", '1921–1925', 'New Jersey', 'Democratic', '1879–1940']
SQL:

assistant: SELECT "Years" FROM "Table" WHERE "Representative" = 'Frank A. Oliver';