 Complete the following phrase:  Stoyan Angelov Pilichev Стоян Ангелов Пиличев, born November 20, 1938, Chiroko, Bulgaria was a Bulgarian boxer who competed in the lightweight category at the 1964 and 1968 Summer Olympics, as a member of the Bulgarian national boxing team. In the 1964 Summer Olympics he lost to Józef Grudzień from Poland in the quarter-final. In the 1968 Summer Olympics he lost to Calistrat Cuțov from Romania in the quarter-final. Pilichev represented Bulgaria in the lightweight category of the 