Given the input sentence, please extract the subject and object containing a certain relation in the sentence according to the following relation types, in the format of "relation1: word1, word2; relation2: word3, word4". Relations include: 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.

Oil major BP PLC BP., +6.04% BP, +5.98% tacked on 6%, Royal Dutch Shell PLC RDSB, +4.67% RDS.B, +3.60% rose 4.7% and BG Group PLC BG., +4.10% moved up 4.1%.

Answer: parent_organization: BG Group, Royal Dutch Shell