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In 1998  Go-Ahead Group  replaced Northwest and Delta as GHI's owner.FundingUniverse The Go-Ahead Group Plc : Company History In 2000 Go-ahead merged GHI with its other  UK  aircraft ground handling operations Midland Airport Services British Midland Handling Services and Reed Aviation under the Aviance UK brand .
 country of headquarters: Go-Ahead Group, UK
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "relation1: word1, word2; relation2: word3, word4". 
Option: cities of residence, top members employees, members, alternate names, origin, state or provinces of residence, title of person, spouse, city of headquarters, NA, founded by, state or province of headquarters, employee of, countries of residence, country of birth, founded, subsidiaries, country of headquarters 
Text: {0} 
Answer:
 country of headquarters: Go-Ahead Group, UK