Title: Nigeria.
Question: When did northern Nigeria ban slavery?

Title: Genocide.
Question: Which group was accused by the ECHR of having an overly constricted idea of the meaning of destruction in defining genocide?

Title: Czech language.
Question: What inspired the Czech's national pride?

Title: University of Notre Dame.
Question:
Where did U.S. News & World Report rank Notre Dame in its 2015-2016 university rankings?