CREATE TABLE table_11318462_5 (crew VARCHAR, open_1st_viii VARCHAR, u15_3rd_iv VARCHAR, u15_1st_iv VARCHAR)

how many crew had u15 3rd iv being bgs and u15 1st iv being acgs and open 1st viii being acgs
SELECT COUNT(crew) FROM table_11318462_5 WHERE u15_3rd_iv = "BGS" AND u15_1st_iv = "ACGS" AND open_1st_viii = "ACGS"
SELECT COUNT("crew") FROM "table_11318462_5" WHERE "ACGS" = "open_1st_viii" AND "ACGS" = "u15_1st_iv" AND "BGS" = "u15_3rd_iv"