* ANTOFAGASTA : Barrick Gold Corp agreed on Thursday to sell 50 percent of its Zaldivar copper mine in Chile to copper miner Antofagasta Plc for $1 billion in cash, and both parties stressed that this was just the start of more cooperation.
Take context from the input text and decide on the accurate relationship between 'Antofagasta Plc' and 'ANTOFAGASTA' from the options provided.
Options: director/manager, location of formation, distribution format, chief executive officer