716
She had two further honours in that year : first she was honoured by her alma mater the  University of Pretoria  with their Tuks Alumni Laureate Award and secondly she was invited to attend the historic 85th birthday celebrations of Nelson Mandela in  Sandton  Johannesburg .
 city of headquarters: University of Pretoria, Sandton
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:
 city of headquarters: University of Pretoria, Sandton