* 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.
Analyze the relationship between 'Antofagasta Plc' and 'ANTOFAGASTA' within the context of the input sentence.
Options: director/manager, location of formation, distribution format, chief executive officer