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