Original sentence: Christina, Onassis daughter, made clear that she didn't like Jacqueline, and after Alexander's death, she convinced his father that Jacqueline had some kind of curse due to John and Robert Kennedy's murders
Edited sentence: Christina, Onassis's daughter, made clear that she didn't like Jacqueline, and after Alexander's death, she convinced his father that Jacqueline had some kind of curse due to John and Robert Kennedy's murders