He has run the New York City Ballet since 1983 , when George Balanchine died , although he shared the leadership with Jerome Robbins until 1990 .
Jerome Robbins /business/person/company New York City Ballet
George Balanchine /business/person/company New York City Ballet
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Jerome Robbins
PERSON
New York City Ballet
LOCATION
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George Balanchine
PERSON
New York City Ballet
LOCATION
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