user: Question: What is the total number of Round, when Position is 2b?
Columns: ['Player', 'Position', 'Round', 'Overall', 'MLB Team']
Types: ['text', 'text', 'real', 'real', 'text']
Sample row: ['Aaron Pribanic', 'RHP', 3.0, 98.0, 'Seattle Mariners']
SQL:

assistant: SELECT COUNT("Round") FROM "Table" WHERE "Position" = '2b';