What is the relationship between BG Group and Royal Dutch Shell in the context of the input sentence. Choose an answer from: 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.

(Reuters) - Royal Dutch Shell (RDSa.L), which is all set to acquire rival BG Group Plc (BG.L), may cut its capital expenditure for the year by several billion dollars from the previously announced $33 billion figure (21 billion pounds), the Financial Times reported on Sunday, citing sources.

Answer: parent_organization