<prompt> Pedzisa mutsara unotevera: Mumitambo yeOlympics yeLondon ya2012 Kessy naRoss vakapedza nemenduru yesirivha, pavakakundwa nevamwe vavo vomunyika Misty May-Treanor naKerri Walsh Jennings mu  <response>: mutambo wemakwikwi nemigumisiro ye16-21 uye 1621. 