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_44 ( year_opened VARCHAR, arena_venue VARCHAR )

### Question ###
What year did the San Agustin gym open?

### Accurate SQL ###

SELECT year_opened FROM table_name_44 WHERE arena_venue = "san agustin gym"