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When all of this material is released it refreshes the memories of these family members about Aug. 27 -- and does so in a very stressful way said Chicago attorney  Robert Clifford  who is representing several families in lawsuits against  Comair  .
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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:
 NA: Robert Clifford, Comair