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:
| Rank | Lane | Name | Nationality | Time | Notes |
| --- | --- | --- | --- | --- | --- |
|  | 4 | James Goddard | England | 1:55:58 | CGR |
|  | 8 | Gareth Kean | New Zealand | 1:57:37 | NR |
|  | 7 | Ashley Delaney | Australia | 1:58:18 |  |
| 4 | 1 | Christopher Walker-Hebborn | England | 1:59:00 |  |
| 5 | 5 | Charles Francis | Canada | 2:00:07 |  |
| 6 | 6 | Marco Loughran | Wales | 2:00:11 |  |
| 7 | 3 | Tobias Oriwol | Canada | 2:00:24 |  |
| 8 | 2 | Ryan Bennett | England | 2:01:86 |  |
Question:
how many nations participated?
Answer:
5