5110
Other institutions include the Indian Institute of Petroleum  Oil and Natural Gas Corporation  Survey of  India  Indian Institute of Remote Sensing Wildlife Institute of India and the Forest Research Institute .
 country of headquarters: Oil and Natural Gas Corporation, India
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:  Oil and Natural Gas Corporation, India 
Answer:
 country of headquarters: Oil and Natural Gas Corporation, India