Complex sentence: Jacobus Johannes Hoogveld (August 4,1884 in Arnhem--February 17,1948 in Arnhem) was a Dutch athlete, who competed at the 1908 Summer Olympics in London.
Split into simpler sentences: Jacobus Johannes Hoogveld (August 4,1884-February 17,1948) was a Dutch athlete. He competed at the 1908 Summer Olympics in London.