user: Question: What frame of time is listed under years during the 72nd congress?
Columns: ['Representative', 'Party', 'Years', 'Congress', 'District Home', 'Occupation', 'Electoral history']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Joseph Howell', 'Republican', 'March 4, 1913 – March 4, 1917', '63rd', 'Logan', 'Educator', 'First elected in 1902 (At-large district) Retired']
SQL:

assistant: SELECT "Years" FROM "Table" WHERE "Congress" = '72nd';