premise: The Africa Cup of Nations had its schedule changed in 2013 to avoid conflict with the World Cup.
hypothesis: The 2013 Africa Cup of Nations , also known as the Orange Africa Cup of Nations South Africa 2013 for sponsorship reasons , held from 19 January to 10 February 2013 , was the 29th Africa Cup of Nations , the football championship of Africa organized by the Confederation of African Football ( CAF ) . Africa Cup of Nations . As of 2013 , the tournament was switched to being held in odd-numbered years so as not to clash with the FIFA World Cup .