Simplify the following text for a Grade 5 native English-speaking person.
Original: In 1949 De Laurentiis married actress Silvana Mangano , with whom he had four children : Veronica , Raffaella , who is also a film producer , Federico , who died in a plane crash in 1981 , and Francesca . They divorced in 1988 prior to her death in 1989 .
Simplified: He had four children with his first wife , actress Silvana Mangano , who died in 1989 .