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Past ETHA presidents include the late Claude Hall an American diplomatic historian at Texas University in College Station who served from 1976 1977 ; Bill O'Neal prolific western author from  Panola College  in  Carthage  Texas who head the association from 1991 1992 and Robert T. Ty Cashion ( born 1956 ) of Sam Houston State University in Huntsville Texas the president from 2002-2003 .
 city of headquarters: Panola College, Carthage
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:  Panola College, Carthage 
Answer:
 city of headquarters: Panola College, Carthage