Question: When north american record is the world record who is the denis nizhegorodov ( rus )?
Schema: create table table_24059973_3 (denis_nizhegorodov___rus__ varchar, world_record varchar, PRIMARY KEY (denis_nizhegorodov___rus__))
SQL: select denis_nizhegorodov___rus__ from table_24059973_3 where world_record = "north american record"