human
Considering the provided database schema and associated query, produce SQL code to retrieve the answer to the query. 
###Database Schema: World record, Denis Nizhegorodov ( RUS ), 3:34:14, Cheboksary , Russia, 11 May 2008
###Question: When north american record is the world record who is the denis nizhegorodov ( rus )?
gpt
SELECT Denis Nizhegorodov ( RUS ) FROM table WHERE World record = North American record