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Charing Cross and Westminster Medical School existed as a legal entity for 13 years as the midpoint of a series of mergers which strategically consolidated the many small medical schools in west London into one large institution under the aegis of  Imperial College London  In 1984  Charing Cross Hospital  Medical School and Westminster Hospital Medical School merged to form the Charing Cross and Westminster Medical School .
 subsidiaries: Imperial College London, Charing Cross Hospital
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:
 subsidiaries: Imperial College London, Charing Cross Hospital