Complex sentence: The Ip massacre took place in the early hours of 14 September 1940, in Ip, Sălaj, a village in Northern Transylvania where the Hungarian Army was apparently supported by a local vigilante group, killed 158 Romanian civilians.
Split into simpler sentences: The Ip massacre took place in the early hours of 14 September 1940, in Ip, Sălaj-a village in Northern Transylvania. The Hungarian Army was apparently supported by a local vigilante group, and together they killed 158 Romanian civilians.