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.

The new expanded joint venture will operate as National Geographic Partners and will combine the National Geographic television channels with National Geographic ' s other media and consumer-oriented assets, including: National Geographic magazines; National Geographic Studios; related digital and social media platforms; books; maps; children ' s media; and ancillary activities, including travel, location-based entertainment, archival sales, catalog, licensing and ecommerce businesses.

Answer: legal_form: National Geographic Partners, joint venture; subsidiary: National Geographic Partners, National Geographic