sentences:  In time, this operation became a full-fledged commercial banking operation.Then in 1974, Commonwealth Bank withdrew from PNG by transferring its operations to the new government, which gave the bank the name "Papua New Guinea Banking Corporation" (PNGBC).In 2002, PNGBC ran into problems, and BSP acquired the government's 49% stake in PNGBC in return for the government taking a 25% stake in BSP.