<prompt> Pedzisa mutsara unotevera: Stefanos Dimitriadis akaberekwa musi wa8 Gunyana 1989, Athens mutambi wekushambira wekuGreece. Mumitambo yeOlympic yezhizha ya2012, akakwikwidza mu  <response>: Varume 100 metres butterfly uye 200 metres butterfly, vachipedza vari 40th uye 23rd nzvimbo zvachose zvichiteerana mu heats, kukundikana kukodzera semifinals. 