<prompt> Nyorai mberi kweiyi ndima - Akatora chikamu mu1964 Summer Olympics hafu yekupedzisira mumamita mazana maviri, wechitanhatu mu4 × 100 metres relay  <response>: uye mumitambo yeOlympic yezhizha ya1968 kupisa mumamita mazana mana, wechishanu mu4 × 100 metres relay. 