user: Question: Which player played Center, is from the United States, and entered before 2012?
Columns: ['Player', 'Nationality', 'Position', 'From', 'School/Country']
Types: ['text', 'text', 'text', 'real', 'text']
Sample row: ['Cotton Nash Category:Articles with hCards', 'United States', 'Forward', 1965.0, 'Kentucky']
SQL:

assistant: SELECT "Player" FROM "Table" WHERE "From" < 2012.0 AND "Position" = 'Center' AND "Nationality" = 'United States';