user: Question: How many positions have round 3?
Columns: ['Round', 'Choice', 'Player', 'Position', 'Height', 'Weight', 'College']
Types: ['real', 'real', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, 16.0, 'Larry English', 'DE/OLB', '6ft 3 in', '255lb', 'Northern Illinois']
SQL:

assistant: SELECT COUNT("Position") FROM "Table" WHERE "Round" = 3.0;