<prompt> Pedzisa mutsara unotevera: John Lavers Bartram 3 June 1925 20 November 2014 akanga ari mutambi weAustralia uye mutambi wenhandare uyo akakwikwidza mu1948 Summer Olympics mumamita zana, 400 metres uye  <response>: 4 × 100 metres relay. 