Complex sentence: The Griqua are a racially and culturally mixed people who are primarily descended from the intermarriages and sexual relations (sometimes rape) between European colonist men and Khoikhoi, and eventually mixed-race, women living in the Cape during the 17th and 18th centuries.
Split into simpler sentences: The Griqua are a racially and culturally mixed people who are primarily descended from the intermarriages and sexual relations (sometimes rape) between European colonist men and Khoikhoi women. Later the Europeans chose mixed-race women of the Khoikhoi, who were living in the Cape during the 17th and 18th centuries.