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.

Honda is challenging Textron Inc's Cessna and Brazil's own Embraer SA in the ultralight segment, where demand has been slow to recover from a recent business jet downturn.

Answer: legal_form: Cessna, Textron; parent_organization: Cessna, Textron; owned_by: Cessna, Textron; subsidiary: Textron, Cessna