user: Question: What is the least rank for the premier that assumed office on 17 May 1919 and was in office for 7 years, 335 days?
Columns: ['Rank:', 'State:', 'Premier:', 'Party:', 'Assumed office:', 'Left office:', 'TOTAL Time in office:']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'SA', 'Sir Thomas Playford (1896–1981) GCMG', 'Liberal & Country League', '5 November 1938', '10 March 1965', '26years, 125days']
SQL:

assistant: SELECT MIN("Rank:") FROM "Table" WHERE "TOTAL Time in office:" = '7 years, 335 days' AND "Assumed office:" = '17 May 1919';