<prompt> Umusho 1: Abahlanganyeli kamuva baphetha ngo - Arthur Bisguier ngo - 1953, uPetar Trifunovic ngo - 1957 noWalter Korn ngo - 1963. Isigwebo 2: Kamuva abanye ababhali bahlanganisa u - Arthur Bisguier owazalwa ngo - 1953, uPetar Trifunovic owazalwa ngo - 1957, noWalter Korn owazalwa ngo - 1963. Umbuzo: Ingabe umusho 1 nomusho 2 usho into efanayo? Yebo noma Cha?  <response>: Cha, akunjalo. 