* 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.
Refer to the input text as context and select the correct relationship between 'Antofagasta Plc' and 'ANTOFAGASTA' from the available options.
Options: location of formation, chief executive officer, distribution format, director/manager