Complex sentence: Jacques Schmidt (16 March 1933--8 September 1996) was a French costume designer, who collaborated regularly with stage directors Antoine Bourseiller, Patrice Chéreau and Roger Planchon.
Split into simpler sentences: Jacques Schmidt (16 March 1933--8 September 1996) was a French costume designer. He collaborated regularly with Antoine Bourseiller, Patrice Chéreau and Roger Planchon.