<prompt> Pedzisa mutsara unotevera: Aroldo Pereira da Silva Gunyana 20, 1929 Chivabvu 24, 1995 aive mutambi weBrazil uye mumhanyi uyo akakwikwidza pa1948 Summer Olympics mumamita zana, mazana maviri emamita uye  <response>: 4 x 100 metres relay. 