user: Question: How many rounds have a position of c?
Columns: ['Round', 'Pick', 'Player', 'Position', 'Nationality', 'School/Club Team']
Types: ['real', 'real', 'text', 'text', 'text', 'text']
Sample row: [1.0, 1.0, 'Bill Walton', 'C', 'United States', 'UCLA']
SQL:

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