user: Question: What is the highest Rank, when Location is kinshasa, dr congo, and when Current Seating Capacity is less than 80000?
Columns: ['Rank', 'Venue name', 'Highest attendance', 'Location', 'Current seating capacity']
Types: ['real', 'text', 'text', 'text', 'real']
Sample row: [1.0, 'Indianapolis Motor Speedway', '400,000', 'Speedway , Indiana , United States', 257325.0]
SQL:

assistant: SELECT MAX("Rank") FROM "Table" WHERE "Location" = 'kinshasa, dr congo' AND "Current seating capacity" < 80000.0;