user: Question: What was the total tenure time with a rank of 49?
Columns: ['Total tenure rank', 'Uninterrupted rank', 'Name', 'Party affiliation', 'Total tenure time', 'Uninterrupted time']
Types: ['real', 'real', 'text', 'text', 'text', 'text']
Sample row: [1.0, 1.0, 'John Dingell (H)', 'Democratic Party', '58years, 50days', '58years, 50days']
SQL:

assistant: SELECT "Total tenure time" FROM "Table" WHERE "Total tenure rank" = 49.0;