user: Question: Who was the winner when the Philadelphia Eagles were the losers after 1958 at Yankee Stadium?
Columns: ['Year', 'Date', 'Winner', 'Result', 'Loser', 'Location']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [1950.0, 'November 26', 'New York Giants', '7-3', 'Philadelphia Eagles', 'Polo Grounds']
SQL:

assistant: SELECT "Winner" FROM "Table" WHERE "Loser" = 'Philadelphia Eagles' AND "Location" = 'Yankee Stadium' AND "Year" > 1958.0;