Sentence:  One particularly damaging, but often ignored, effect of conflict on education is the proliferation of attacks on schools...as children, teachers or school buildings become the targets of attacks. Parents fear sending their children to school. Girls are particularly vulnerable to <WSD>sexual</WSD> violence. 
Meaning of the word marked with <WSD> tags:  Pertaining to sexual intercourse or other intimate physical contact. (from 18th c.)