user: Question: What was the latest season with 20 contestants?
Columns: ['Season', 'Network', 'Host', 'Contestants', 'Winner', 'Destination']
Types: ['real', 'text', 'text', 'real', 'text', 'text']
Sample row: [2.0, 'MTV India', 'Rannvijay Singh', 10.0, 'Ayushmann Khurrana', 'India']
SQL:

assistant: SELECT MAX("Season") FROM "Table" WHERE "Contestants" = 20.0;