Utilize the input text as a context reference, choose the right relationship between BG Group and Royal Dutch Shell from the options. Options: product/material produced, manufacturer, distributed by, industry, position held, original broadcaster, owned by, founded by, distribution format, headquarters location, stock exchange, currency, parent organization, chief executive officer, director/manager, owner of, operator, member of, employer, chairperson, platform, subsidiary, legal form, publisher, developer, brand, business division, location of formation, creator.

Glencore rose the most, up 3.2 percent, with fellow miner BHP Billiton (NYSE: BBL - news ) also among the biggest gainers, while energy companies BG Group (LSE: BG.L - news ) and Royal Dutch Shell (Xetra: R6C1.DE - news ) climbed 2.3 and 1.3 percent respectively.

Answer: parent_organization