BlackRock is the largest shareholder in BHP Billiton, Barrick Gold, Newmont Mining, Freeport and McMoran and South32, and is among the top four shareholders in each of Rio Tinto, Peabody Energy, Fortescue Metals Group, Glencore and Anglo American.
What is the relationship between 'Glencore' and 'BlackRock' in the context of the input sentence.
Options: position held, owned by, developer, brand