CREATE TABLE table_24059973_3 (denis_nizhegorodov___rus__ VARCHAR2, world_record VARCHAR2)

When north american record is the world record who is the denis nizhegorodov ( rus )?
SELECT denis_nizhegorodov___rus__ FROM table_24059973_3 WHERE world_record = "North American record"
SELECT "denis_nizhegorodov___rus__" FROM "table_24059973_3" WHERE "North American record" = "world_record"