user: Question: In which colleges is the NFL Team New York Giants and with the position Defensive back?
Columns: ['Pick #', 'NFL Team', 'Player', 'Position', 'College']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [280.0, 'Baltimore Colts', 'Jim Bob Taylor', 'Quarterback', 'Georgia Tech']
SQL:

assistant: SELECT "College" FROM "Table" WHERE "NFL Team" = 'New York Giants' AND "Position" = 'Defensive back';