On September 9, 2015, Twenty-First Century Fox, Inc. (the "Company") and The National Geographic Society (the "Society") issued a joint press release announcing that they have reached an agreement to expand their partnership through which they have owned and operated the properties in National Geographic Channels, a joint venture of domestic and international cable television channels.
Refer to the input text as context and select the correct relationship between 'National Geographic Society' and 'National Geographic' from the available options.
Options: industry, location of formation, owner of, owned by