<prompt> Pa2012 United States Olympic Trials muOmaha, Nebraska, United States inokodzera kuenda kumaOlympics, Adams akaita chikwata cheU.S. cheOlympic kekutanga nekukunda 200-metre butterfly. Adams akakwikwidzawo mumakwikwi emamita mazana mana, uye akapedza wechitatu nenguva ye4: 38.62. Mumakwikwi eZhizha reOlympic ra2012 muLondon, akapedza ari wechishanu mumakwikwi evakadzi emamita 200 ekumhanyisa bhatafurayi  <response>: . 