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 African vision Tourism is one of the important sectors of Kenya's economy and Kenya Airways (KQ), which is the national carrier, is to connect people from all over the world to Nairobi and other parts of Africa.

Answer: location_of_formation: Kenya Airways, Nairobi