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_11318462_5 ( crew VARCHAR, open_1st_viii VARCHAR, u15_3rd_iv VARCHAR, u15_1st_iv VARCHAR )

### Question ###
how many crew had u15 3rd iv being bgs and u15 1st iv being acgs and open 1st viii being acgs

### Accurate SQL ###

SELECT COUNT(crew) FROM table_11318462_5 WHERE u15_3rd_iv = "BGS" AND u15_1st_iv = "ACGS" AND open_1st_viii = "ACGS"