Complex sentence: In Nigeria Type I is usually found in the south and the more severe forms in the north; in 2013 it was estimated that three percent of girls aged 0--14 in Nigeria had been infibulated.
Split into simpler sentences: In Nigeria Type I is usually found in the south and the more severe forms in the north. In 2013 it was estimated that three percent of girls aged 0--14 in Nigeria had been infibulated.