11969
In 1957 MacLean went to the  National Institutes of Health  as the head of a new section on the limbic system in the Laboratory of Neurophysiology  National Institute of Mental Health  ( NIMH ) .
 subsidiaries: National Institutes of Health, National Institute of Mental Health
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:  National Institutes of Health, National Institute of Mental Health 
Answer:
 subsidiaries: National Institutes of Health, National Institute of Mental Health