1783
To enable development of major hydroelectric sites on the Columbia and Peace Rivers the BC government under Premier W. A. C. Bennett bought BC Electric in 1961 and the following year merged it with the BCPC to create the  British Columbia  Hydro and Power Authority commonly known as  BC Hydro  .
 alternate names: British Columbia, BC Hydro
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:  British Columbia, BC Hydro 
Answer:
 alternate names: British Columbia, BC Hydro