<prompt> Pedzisa mutsara unotevera: Ivan Zanoni Hausen November 2, 1927 April 21, 2003 akanga ari mutambi weBrazil uye mutambi wenhandare uyo akakwikwidza mu1948 Summer Olympics mumamita zana, mazana maviri uye  <response>: 4 x 100 metres relay. 