1823
Much of the early work on these methods was done in Ivan Sutherland's graphics group at the University of Utah and at the  Evans Sutherland  company in  Salt Lake City  .
 city of headquarters: Evans Sutherland, Salt Lake City
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:  Evans Sutherland, Salt Lake City 
Answer:
 city of headquarters: Evans Sutherland, Salt Lake City