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.

Chinese carriers, boosted by drops in fuel costs, were the region’s most successful, with China Eastern Airlines, Hainan Airlines, Cathay Pacific Airways, China Southern Airlines and Xiamen Airlines all making it in the top 25 rankings.

Answer: owned_by: Xiamen Airlines, China Southern Airlines; parent_organization: Xiamen Airlines, China Southern Airlines