Table schema:
CREATE TABLE table_name_72 (quay_cranes INTEGER, terminal VARCHAR, berths VARCHAR, operator VARCHAR)

Question: Name the lowest Quay cranes for Berths of 1 and operator of mtl with terminal of terminal 5 (ct5)
SQL: SELECT MIN(quay_cranes) FROM table_name_72 WHERE berths = 1 AND operator = "mtl" AND terminal = "terminal 5 (ct5)"