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Gordon Food Service  Guardian Industries Corp.  ( founder  William Davidson  ) Halo Burger Harley Ellis Devereaux Haworth ( company ) Henry Ford Hospital Heritage Guitars Herman Miller ( office equipment ) Howard Miller Clock Company Hungry Howie's Ilitch Holdings Inc .
 founded by: Guardian Industries Corp., William Davidson
Given options, please tell me the relationships of all the listed entity pairs.Output format is "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} 
 Entity Pairs:  Guardian Industries Corp., William Davidson 
Answer:
 founded by: Guardian Industries Corp., William Davidson