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 | Athlete | Country | Time | Notes |
| --- | --- | --- | --- | --- |
| 1.0 | Drew Ginn , Duncan Free | Australia | 6:34.29 | FA |
| 2.0 | Tyler Winklevoss , Cameron Winklevoss | United States | 6:36.65 | FA |
| 3.0 | Tom Lehmann , Felix Drahotta | Germany | 6:37.26 | FA |
| 4.0 | Goran Jagar , Nikola Stojić | Serbia | 6:38.96 | FB |
| 5.0 | Giuseppe De Vita , Raffaello Leonardo | Italy | 6:47.30 | FB |
| 6.0 | Morten Nielsen , Thomas Larsen | Denmark | 6:48.65 | FB |
Question:
What is the rank of the athletes that have Notes of fb, and a Time of 6:47.30?
Answer:
5.0