Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_17 ( gagarin_cup_winner VARCHAR, gagarin_cup_finalist VARCHAR )

### Question ###
Who is the gagarin cup winner when avangard omsk is the gagarin cup finalist?

### Accurate SQL ###

SELECT gagarin_cup_winner FROM table_name_17 WHERE gagarin_cup_finalist = "avangard omsk"