1882
Her dissertation research focused on the history of systems thinking specifically the lives and work of the five founders of the Society for  General Systems  Research : Ludwig von Bertalanffy Kenneth Boulding Ralph Gerard James Grier Miller and  Anatol Rapoport  .
 founded by: General Systems, Anatol Rapoport
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 by: General Systems, Anatol Rapoport