Complex sentence: These water points are operated by so-called cartels that, according to statements made at community meetings in the slums of Kibera and Mathare in September 2011, try to monopolize this supply with violence to keep prices high.
Split into simpler sentences: These water points are operated by so-called cartels. According to statements made at community meetings in the slums of Kibera and Mathare in September 2011, the cartels try to monopolize this supply with violence to keep prices high.