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On 28 December 2005 an Let-backed group attacked the  Indian Institute of Science   Bangalore  and on 18 May 2007 again the Lashkar-e-Toiba arranged a blast at the Mecca Masjid in Hyderabad killing 16 persons .
 city of headquarters: Indian Institute of Science, Bangalore
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: Indian Institute of Science, Bangalore