user: Question: Who lost when the Philadelphia Eagles won at Lincoln Financial Field on September 30?
Columns: ['Year', 'Date', 'Winner', 'Result', 'Loser', 'Location']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [2010.0, 'November 21', 'Philadelphia Eagles', '27-17', 'New York Giants', 'Lincoln Financial Field']
SQL:

assistant: SELECT "Loser" FROM "Table" WHERE "Location" = 'Lincoln Financial Field' AND "Winner" = 'Philadelphia Eagles' AND "Date" = 'September 30';