Vice President John Dramani Mahama has arrived in South Africa to represent President John Evans Atta Mills at the centenary celebration of the ruling African National Congress (ANC).A statement signed by the Vice President’s Spokesperson, John Abdulai Jinapor, said the visit is at the invitation of the ANC Leader and President of South Africa, H. E. Jacob Gedleyihlekisa Zuma.Mr. Mahama who is leading a Government delegation to the celebration is expected back on January 09, 2012.