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:
| Week | Date | Opponent | Result | Attendance |
| --- | --- | --- | --- | --- |
| 1.0 | September 5, 1983 | Dallas Cowboys | L 30-31 | 55045.0 |
| 2.0 | September 11, 1983 | at Philadelphia Eagles | W 23-13 | 69542.0 |
| 3.0 | September 18, 1983 | Kansas City Chiefs | W 27-12 | 52610.0 |
| 4.0 | September 25, 1983 | at Seattle Seahawks | W 27-17 | 60718.0 |
| 5.0 | October 2, 1983 | Los Angeles Raiders | W 37-35 | 54106.0 |
| 6.0 | October 9, 1983 | at St. Louis Cardinals | W 38-14 | 42698.0 |
| 7.0 | October 17, 1983 | at Green Bay Packers | L 47-48 | 55255.0 |
| 8.0 | October 23, 1983 | Detroit Lions | W 38-17 | 43189.0 |
| 9.0 | October 31, 1983 | at San Diego Chargers | W 27-24 | 46114.0 |
| 10.0 | November 6, 1983 | St. Louis Cardinals | W 45-7 | 51380.0 |
| 11.0 | November 13, 1983 | at New York Giants | W 33-17 | 71482.0 |
| 12.0 | November 20, 1983 | at Los Angeles Rams | W 42-20 | 63031.0 |
| 13.0 | November 27, 1983 | Philadelphia Eagles | W 28-24 | 54324.0 |
| 14.0 | December 4, 1983 | Atlanta Falcons | W 37-21 | 52074.0 |
| 15.0 | December 11, 1983 | at Dallas Cowboys | W 31-10 | 65074.0 |
| 16.0 | December 17, 1983 | New York Giants | W 31-22 | 53874.0 |
Question:
What was the Opponent during the game with a Result of W 37-21?
Answer:
Atlanta Falcons