user: Question: What is the lowest rank for Puerto Rico?
Columns: ['Rank', 'Country', 'Miss Universe', '1st Runner-up', '2nd Runner-up', '3rd Runner-up', '4th Runner-up', 'Semifinalists', 'Total']
Types: ['real', 'text', 'real', 'real', 'real', 'real', 'real', 'real', 'real']
Sample row: [1.0, 'USA', 8.0, 8.0, 6.0, 1.0, 5.0, 28.0, 56.0]
SQL:

assistant: SELECT MIN("Rank") FROM "Table" WHERE "Country" = 'Puerto Rico';