Original sentence: Sir Arthur John Gielgud, OM, CH (14 April 1904 – 21 May 2000) was an English actor, considered by many to be the greatest Classical actor of the twentieth century, particularly known for his warm and expressive voice, which his colleague Sir Alec Guinness likened to "a silver trumpet muffled in silk"
Edited sentence: Sir Arthur John Gielgud, OM, CH (14 April 1904 – 21 May 2000) was an English actor/director/producer, considered by many to be the greatest Classical actor of the twentieth century, particularly known for his warm and expressive voice, which his colleague Sir Alec Guinness likened to "a silver trumpet muffled in silk"