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Arvind Mohan Kayastha ( ) ( A.M. Kayastha ) born on August 1 1960 at Dharmashala is Professor at School of Biotechnology  Banaras Hindu University  ( BHU )  Varanasi  ( India ) and an established scientist in the field of Plant Biochemistry and Enzyme Technology .
 city of headquarters: Banaras Hindu University, Varanasi
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:  Banaras Hindu University, Varanasi 
Answer:
 city of headquarters: Banaras Hindu University, Varanasi