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:
| Date | Score | Set 1 | Set 2 | Total |
| --- | --- | --- | --- | --- |
| 3 July | 0–2 | 15:21 | 15:21 | 30:42 |
| 3 July | 0–2 | 15:21 | 19:21 | 34:42 |
| 3 July | 2–1 | 19:21 | 21:19 | 55:53 |
| 3 July | 2–0 | 21:16 | 21:17 | 42:33 |
| 3 July | 0–2 | 12:21 | 14:21 | 26:42 |
| 3 July | 2–0 | 22:20 | 21:16 | 43:36 |
| 3 July | 1–2 | 21:17 | 21:23 | 53:55 |
| 3 July | 2–0 | 21:11 | 21:12 | 42:23 |
Question:
What Set 2 has a set one at 19:21?
Answer:
21:19