Table:
text: Swimming at the 2000 Summer Olympics – Men's 200 metre backstroke
Heats
Heats
Heat Lane Name_ Nationality Time_
6 4 Lenny Krayzelburg United States 1:58.40
5 4 Aaron Peirsol United States 1:59.10
6 6 Cameron Delaney Australia 1:59.61
6 5 Matt Welsh Australia 1:59.76
4 1 Răzvan Florea Romania 1:59.79
4 8 Örn Arnarson Iceland 1:59.80
5 6 Emanuele Merisi Italy 1:59.92
6 2 Sergey Ostapchuk Russia 2:00.17
4 4 Gordan Kožulj Croatia 2:00.19
5 5 Rogério Romero Brazil 2:00.48
4 6 Chris Renaud Canada 2:00.51
5 7 Marko Strahija Croatia 2:00.72
5 2 Yoav Gath Israel 2:00.80
3 2 Klaas-Erik Zwering Netherlands 2:00.94
4 3 Volodymyr Nikolaychuk Ukraine 2:01.07
4 5 Leonardo Costa Brazil 2:01.08

Question: How many lengths of swimming at the 2000 Summer Olympics - men's 200m backstroke has United States nationality and Aaron Peirsol name?