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.

"Given the Saudi oil minister's comments last week and OPEC's expectations of more balanced oil market fundamentals in the second half of next year, all the signals seem to point to yet another rollover of the current output ceiling in December," said Margaret McQuaile, senior correspondent for Platts , a leading global provider of energy and commodities information.

Answer: parent_organization: Platts, global; owned_by: Platts, global