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 6, 1981 | at Los Angeles Rams | W 27–20 | 63198.0 |
| 2.0 | September 13, 1981 | at Cleveland Browns | W 9–3 | 79483.0 |
| 3.0 | September 20, 1981 | Miami Dolphins | L 16–10 | 47379.0 |
| 4.0 | September 27, 1981 | at New York Jets | L 33–17 | 50309.0 |
| 5.0 | October 4, 1981 | Cincinnati Bengals | W 17–10 | 44350.0 |
| 6.0 | October 11, 1981 | Seattle Seahawks | W 35–17 | 42671.0 |
| 7.0 | October 18, 1981 | at New England Patriots | L 38–10 | 60474.0 |
| 8.0 | October 26, 1981 | at Pittsburgh Steelers | L 26–13 | 52732.0 |
| 9.0 | November 1, 1981 | at Cincinnati Bengals | L 34–21 | 54736.0 |
| 10.0 | November 8, 1981 | Oakland Raiders | W 17–16 | 45519.0 |
| 11.0 | November 15, 1981 | at Kansas City Chiefs | L 23–10 | 73984.0 |
| 12.0 | November 22, 1981 | New Orleans Saints | L 27–24 | 49581.0 |
| 13.0 | November 29, 1981 | Atlanta Falcons | L 31–27 | 40201.0 |
| 14.0 | December 3, 1981 | Cleveland Browns | W 17–13 | 44502.0 |
| 15.0 | December 13, 1981 | at San Francisco 49ers | L 28–6 | 55707.0 |
| 16.0 | December 20, 1981 | Pittsburgh Steelers | W 21–20 | 41056.0 |
Question:
Who was the opponent on November 15, 1981?
Answer:
at Kansas City Chiefs