Complex sentence: Following his failure to finish at the 2001 IAAF World Half Marathon Championships, Silva retired and owns a successful company'German Silva Coaching', organizes races and is the ambassador of the Texel Half Marathon in the Netherlands.
Split into simpler sentences: Following his failure to finish at the 2001 IAAF World Half-Marathon Championships, Silva retired from professional running. He owns a successful company, Germán Silva Coaching, organizes races, and is the ambassador of the Texel Half-Marathon in the Netherlands.