LONDON, Sept 2 (Reuters) - Royal Dutch Shell (Xetra: R6C1.DE - news ) gained EU approval on Wednesday for its $70 billion acquisition of Britain's BG Group (LSE: BG.L - news ) , the second of four key markets needed to clear the deal.
Take context from the input text and decide on the accurate relationship between 'BG Group' and 'Royal Dutch Shell' from the options provided.
Options: currency, manufacturer, parent organization, platform