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 17, 1967 | at St. Louis Cardinals | W 37–20 | 40801.0 |
| 2.0 | September 24, 1967 | at Dallas Cowboys | L 38–24 | 66209.0 |
| 3.0 | October 1, 1967 | at Washington Redskins | L 38–34 | 50266.0 |
| 4.0 | October 8, 1967 | New Orleans Saints | W 27–21 | 62670.0 |
| 5.0 | October 15, 1967 | at Pittsburgh Steelers | W 27–24 | 39782.0 |
| 6.0 | October 22, 1967 | Green Bay Packers | L 48–21 | 62585.0 |
| 7.0 | October 29, 1967 | Cleveland Browns | W 38–34 | 62903.0 |
| 8.0 | November 5, 1967 | at Minnesota Vikings | L 27–24 | 44960.0 |
| 9.0 | November 12, 1967 | at Chicago Bears | L 34–7 | 46223.0 |
| 10.0 | November 19, 1967 | Pittsburgh Steelers | W 28–20 | 62982.0 |
| 11.0 | November 26, 1967 | Philadelphia Eagles | W 44–7 | 63027.0 |
| 12.0 | December 3, 1967 | at Cleveland Browns | L 24–14 | 78594.0 |
| 13.0 | December 10, 1967 | Detroit Lions | L 30–7 | 63011.0 |
| 14.0 | December 17, 1967 | St. Louis Cardinals | W 37–14 | 62955.0 |
Question:
What team was the opponent on October 15, 1967?
Answer:
at Pittsburgh Steelers