Complex sentence: In Cologne, Police dispatched 143 local officers and 70 federal officers to restore order; however, due to darkness and the number of people involved police chief Wolfgang Albers conceded that their efforts were not effective.
Split into simpler sentences: In Cologne, police dispatched 143 local officers and 70 federal officers to restore order. However, due to darkness and the number of people involved, police chief Wolfgang Albers conceded that their efforts were not effective.