Mining stocks trimmed earlier losses but still finished lower with heavyweights BHP Billiton (NYSE: BBL - news ) , Glencore (Xetra: A1JAGV - news ) and Anglo American (LSE: AAL.L - news ) ending in the red.
Utilize the input text as a context reference, choose the right relationship between 'Glencore' and 'Mining' from the options.
Options: chief executive officer, manufacturer, industry, subsidiary