user: Question: What was the lowest round that Melvin Johnson played?
Columns: ['Pick', 'Round', 'Player', 'Position', 'School']
Types: ['real', 'real', 'text', 'text', 'text']
Sample row: [12.0, 1.0, 'Warren Sapp', 'Defensive Tackle', 'Miami']
SQL:

assistant: SELECT MIN("Round") FROM "Table" WHERE "Player" = 'Melvin Johnson';