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_1974545_3 ( basketball_arena VARCHAR, capacity VARCHAR )

### Question ###
How many basketball arenas are there that belong to a school with a capacity of 3,000?

### Accurate SQL ###

SELECT COUNT(basketball_arena) FROM table_1974545_3 WHERE capacity = "3,000"