user: Question: What is the rank for the Mixed team nation with a total of less than 13?
Columns: ['Rank', 'Nation', 'Gold', 'Silver', 'Bronze', 'Total']
Types: ['real', 'text', 'real', 'real', 'real', 'real']
Sample row: [1.0, 'United States (host nation)', 78.0, 82.0, 79.0, 239.0]
SQL:

assistant: SELECT "Rank" FROM "Table" WHERE "Total" < 13.0 AND "Nation" = 'Mixed team';