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 | Rowers | Country | Time | Notes |
| --- | --- | --- | --- | --- |
| 1.0 | Marcello Miani , Elia Luini | Italy | 6:16.16 | SA/B |
| 2.0 | Zhang Guolin , Sun Jie | China | 6:17.62 | SA/B |
| 3.0 | Samuel Beltz , Thomas Gibson | Australia | 6:19.15 | R |
| 4.0 | Eyder Batista , Yunior Perez | Cuba | 6:19.36 | R |
| 5.0 | Devender Kumar Khandwal , Manjeet Singh | India | 6:37.13 | R |
Question:
What is the lowest rank for the team that raced a time of 6:17.62 and a notes of sa/b?
Answer:
2.0