Complex sentence: The firm was founded by German lawyer Jürgen Mossack in 1977 and joined by Panamanian novelist/lawyer Ramón Fonseca in 1986 and later added a third director, Swiss lawyer Christoph Zollinger.
Split into simpler sentences: The firm was founded by German lawyer Jürgen Mossack in 1977 and joined by Panamanian novelist/lawyer Ramón Fonseca in 1986. It later added a third director, Swiss lawyer Christoph Zollinger.