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:
| Game | October | Opponent | Score | Record |
| --- | --- | --- | --- | --- |
| 1.0 | 8.0 | @ Detroit Red Wings | 4 - 1 | 0-1-0 |
| 2.0 | 11.0 | @ Chicago Black Hawks | 5 - 3 | 1-1-0 |
| 3.0 | 15.0 | @ Montreal Canadiens | 6 - 1 | 1-2-0 |
| 4.0 | 17.0 | @ Toronto Maple Leafs | 1 - 1 | 1-2-1 |
| 5.0 | 18.0 | @ Boston Bruins | 3 - 2 | 1-3-1 |
| 6.0 | 22.0 | Boston Bruins | 4 - 3 | 2-3-1 |
| 7.0 | 25.0 | Montreal Canadiens | 2 - 1 | 2-4-1 |
| 8.0 | 28.0 | Chicago Black Hawks | 6 - 1 | 2-5-1 |
| 9.0 | 31.0 | @ Toronto Maple Leafs | 4 - 1 | 2-6-1 |
Question:
What is the Opponent before October 31 with a Record of 2-3-1 after Game 5?
Answer:
Boston Bruins