Original sentence: Anger of local government control by Protestants, and the awarding of housing to Protestants to ensure Unionist majorities in areas with large Catholic populations, played a significant part in creating the Civil Rights Movement in the 1960s, with a sit-in by nationalist politician Austin Currie in a house granted to an unmarried protestant woman ahead of a large homeless Catholic family triggering off the movement.Once established under the Government of Ireland Act 1920, Northern Ireland was structured geographically (see gerrymander) so as to provide unionist majorities in its local government system, with significantly nationalist areas producing unionist majorities through the granting of voting rights exclusively to property owners (where most Catholics were renting and most Protestants were owners).Political parties in the North can be divided into three distinct categories: unionist parties, such as the Democratic Unionist Party, the Ulster Unionist Party, and other smaller parties such as the Progressive Unionist Party and the United Kingdom Unionist Party; nationalist parties, Sinn Féin and the Social Democratic and Labour Party (SDLP); and cross-community parties such as the Alliance Party and the Northern Ireland Women's Coalition
Edited sentence: Political parties in Northern Ireland can be divided into three distinct categories: unionist parties, such as the Democratic Unionist Party, the Ulster Unionist Party, and other smaller parties such as the Progressive Unionist Party and the United Kingdom Unionist Party; nationalist parties, Sinn Féin and the Social Democratic and Labour Party (SDLP); and cross-community parties such as the Alliance Party and the Northern Ireland Women's Coalition