Complex sentence: A mass abduction of schoolgirls occured at the Government Secondary School in the town of Chibok in Borno State, in northeastern Nigeria on 14 April 2014, conducted by the Islamist militant group Boko Haram.
Split into simpler sentences: A mass abduction of schoolgirls occured at the Government Secondary School in the town of Chibok in Borno State, Nigeria on 14 April 2014. The abduction was conducted by the Islamist militant group Boko Haram.