10857
British Airways ( BA ) was created in  1974  when the  British Overseas Airways Corporation  ( BOAC ) and British European Airways Corporation ( BEA ) were combined under the newly formed British Airways Board .
 founded: 1974, British Overseas Airways Corporation
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:
 founded: 1974, British Overseas Airways Corporation