Complex sentence: Grupo Folha is third largest Brazilian media conglomerate of company, after Organizações Globo and Grupo Abril, was founded by Octavio Frias de Oliveira (1912--2007) and led by his son Luiz Frias since 1992.
Split into simpler sentences: Grupo Folha is the third largest Brazilian media conglomerate, after Organizações Globo and Grupo Abril. It was founded by Octavio Frias de Oliveira (1912--2007) and led by his son Luiz Frias since 1992.