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.
Refer to the input text as context and select the correct relationship between 'Glencore' and 'Mining' from the available options.
Options: chief executive officer, manufacturer, subsidiary, industry