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 15, 1968 | at New Orleans Saints | W 24–10 | 74215.0 |
| 2.0 | September 22, 1968 | at Dallas Cowboys | L 28–7 | 68733.0 |
| 3.0 | September 29, 1968 | Los Angeles Rams | L 24–6 | 82514.0 |
| 4.0 | October 5, 1968 | Pittsburgh Steelers | W 31–24 | 81865.0 |
| 5.0 | October 13, 1968 | St. Louis Cardinals | L 27–21 | 79349.0 |
| 6.0 | October 20, 1968 | at Baltimore Colts | W 30–20 | 60238.0 |
| 7.0 | October 27, 1968 | Atlanta Falcons | W 30–7 | 67723.0 |
| 8.0 | November 3, 1968 | at San Francisco 49ers | W 33–21 | 31359.0 |
| 9.0 | November 10, 1968 | New Orleans Saints | W 35–17 | 71025.0 |
| 10.0 | November 17, 1968 | at Pittsburgh Steelers | W 45–24 | 41572.0 |
| 11.0 | November 24, 1968 | Philadelphia Eagles | W 47–13 | 62338.0 |
| 12.0 | December 1, 1968 | New York Giants | W 45–10 | 83193.0 |
| 13.0 | December 8, 1968 | at Washington Redskins | W 24–21 | 50661.0 |
| 14.0 | December 14, 1968 | St. Louis Cardinals | L 27–16 | 39746.0 |
Question:
Who did the Browns play on October 13, 1968?
Answer:
St. Louis Cardinals