Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Year | Date | Winner | Result | Location |
| --- | --- | --- | --- | --- |
| 1940.0 | September 28 | New York Giants | 20-14 | Connie Mack Stadium |
| 1940.0 | October 13 | New York Giants | 17-7 | Polo Grounds |
| 1941.0 | September 13 | New York Giants | 24-0 | Philadelphia Municipal Stadium |
| 1941.0 | October 12 | New York Giants | 16-0 | Polo Grounds |
| 1942.0 | October 11 | New York Giants | 35-17 | Polo Grounds |
| 1942.0 | November 8 | New York Giants | 14-0 | Connie Mack Stadium |
| 1943.0 | October 9 | Eagles/Steagles | 28-14 | Connie Mack Stadium |
| 1943.0 | October 24 | New York Giants | 42-14 | Polo Grounds |
| 1944.0 | October 29 | Philadelphia Eagles | 24-17 | Connie Mack Stadium |
| 1944.0 | November 12 | Tie | 21-21 | Polo Grounds |
| 1945.0 | November 11 | Philadelphia Eagles | 38-17 | Connie Mack Stadium |
| 1945.0 | December 2 | New York Giants | 28-21 | Polo Grounds |
| 1946.0 | November 3 | Philadelphia Eagles | 24-14 | Connie Mack Stadium |
| 1946.0 | November 10 | New York Giants | 45-17 | Polo Grounds |
| 1947.0 | October 5 | Philadelphia Eagles | 23-0 | Connie Mack Stadium |
| 1947.0 | November 9 | Philadelphia Eagles | 41-24 | Polo Grounds |
| 1948.0 | October 10 | Philadelphia Eagles | 45-0 | Connie Mack Stadium |
| 1948.0 | November 7 | Philadelphia Eagles | 35-14 | Polo Grounds |
| 1949.0 | December 4 | Philadelphia Eagles | 24-3 | Polo Grounds |
| 1949.0 | December 11 | Philadelphia Eagles | 17-3 | Connie Mack Stadium |
Question:
What is Location, when Result is 28-21?
Answer:
Polo Grounds