Complex sentence: René Mercet (December 1,1898--June 13,1961) was a Swiss international referee in the 1920s and 1930s who became infamous for his performance in the Italy v Spain replayed quarter-final in the 1934 FIFA World Cup.
Split into simpler sentences: René Mercet (December 1,1898--June 13,1961) was a Swiss international referee in the 1920s and 1930s. He refereed the Italy v Spain replayed quarter-final in the 1934 FIFA World Cup.