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 Trans-Pacific Partnership meeting in Atlanta is being billed as the final stage of negotiations on difficult issues including sugar and dairy market access in North America, rules of origin for car manufacturers, intellectual property rights for prescription drugs and investment protection treaties.

Answer: location_of_formation: issues, Atlanta