Original sentence: How much each factor has contributed, is disputed.So is the attempt by some Jewish leaders in Haifa to stem flight ), and that some Arab leaders called for evacuation of civilian Arabs from the war zone.Some cases of expulsion are well-documented, such as in Lydda and Ramle.The degree to which the flight of the refugees was voluntary or involuntary is hotly debated
Edited sentence: The degree to which the flight of the refugees was voluntary or involuntary is hotly debated, with some citing attempts by the surrounding Arab governments to evacuate women and children, (and the attempt by some Jewish leaders in Haifa, to stem flight ), and others citing a score of the well-documented direct expulsion of the residents of some towns and villages, including Lydda and Ramle