Table:
text: Rowing at the 2008 Summer Olympics – Men's lightweight double sculls
Heat 2
Heat 2
Rank_ Rowers Country Time_ Notes
1 Marcello Miani , Elia Luini Italy 6:16.16 SA/B
2 Zhang Guolin , Sun Jie China 6:17.62 SA/B
3 Samuel Beltz , Thomas Gibson Australia 6:19.15 R
4 Eyder Batista , Yunior Perez Cuba 6:19.36 R
5 Devender Kumar Khandwal , Manjeet Singh India 6:37.13 R

Question: What is the lowest rank for the team that clocked a time of 6:17.62 and a grade of sa/b in rowing at the 2008 Summer Olympics - Men's Lightweight Double Sculls, Men's Heat 2?

Question: Which country has a rank of 3 and grades of r under Rowing at the 2008 Summer Olympics - Men's Lightweight Double Sculls, Heat 2?