user: Question: What position does Denard Walker play?
Columns: ['Pick #', 'NFL Team', 'Player', 'Position', 'College']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [18.0, 'Tennessee Oilers', 'Kenny Holmes', 'Defensive end', 'Miami']
SQL:

assistant: SELECT "Position" FROM "Table" WHERE "Player" = 'Denard Walker';