Given phrases that describe the relationship between two words/phrases as options, extract the word/phrase pair and the corresponding lexical relationship between them from the input text. The output format should be "relation1: word1, word2; relation2: word3, word4". 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.

LONDON, Sept 2 (Reuters) - Royal Dutch Shell (Xetra: R6C1.DE - news ) gained EU approval on Wednesday for its $58 billion acquisition of Britain's BG Group (LSE: BG.L - news ) , the second of four key markets needed to clear the deal, but faced a slight delay in securing a decision in Australia.

Answer: parent_organization: BG Group, Royal Dutch Shell