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 The new environment traps Detroit between its traditional identity and whatever new role it may play in a global automotive world , said William Pelfrey , a former G.M. speechwriter and the author of the book , '' Billy , Alfred and General Motors , '' about two former G.M. leaders : William C. Durant and Alfred P. Sloan . '' 
 company founders: General Motors, William C. Durant
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: nationality, country capital, place of death, children, location contains, place of birth, place lived, administrative division of country, country of administrative divisions, company, neighborhood of, company founders 
Text: {0} 
 Entity Pairs:  General Motors, William C. Durant 
Answer:
 company founders: General Motors, William C. Durant