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He is recognized internationally through scientific leadership in large network programs ( e.g. NOW CASES ArcticNet the Amundsen and CFL ) as an invited member of several Natural Sciences and Engineering Research Council ( NSERC ) national committees ( e.g. NSERC GSC 09 ; NSERC IPY NSERC northern supplements etc ) international committees ( GEWEX IAPP CNC-SCOR IARC etc ) and invitations to national and international science meetings ( e.g. American Geophysical Union ( AGU ) Canadian Meteorological and Oceanographic Society ( CMOS ) American Meteorological Society ( AMS ) American Society for Limnology and Oceanography ( Spain ) IMPACTS ( Russia )  European Space Agency  ( ESA  Italy  ) Arctic Frontiers ( Norway ) etc ) .
 country of headquarters: European Space Agency, Italy
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:
 country of headquarters: European Space Agency, Italy