Utilize the input text as a context reference, choose the right relationship between 'Glencore' and 'mining' from the options.
Options: distribution format, legal form, industry, parent organization

However, mining groups were left behind during yesterday’s rally, with Glencore (Amsterdam: GX8.AS - news ) , under pressure from tumbling commodity prices, down a further 1.4pc to 97.2p.
industry