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.

MOSCOW — Russian oil giant Rosneft says its net profit fell 22 per cent in the second quarter from a year earlier, a stronger result than expected as the weak rouble partly offset falling oil prices.

Answer: headquarters_location: Rosneft, MOSCOW; location_of_formation: Rosneft, MOSCOW; headquarters_location: profit, MOSCOW