instruction:
From the given sentence, extract the phrase (often noun or verb) that carries the given relationship. The generated phrase should be present in the sentence.
question:
Given Relationship: 'be chairman of', Sentence: 'Alan Greenspan , Chairman of the Board of Governors of the Federal Reserve System , gave the conference keynote address .'
answer:
Chairman


question:
Given Relationship: 'meet in', Sentence: 'The Committee meets quarterly on the fourth Thursday of February , May , August and the third Thursday of November at 5:00 p.m. in Fullerton City Hall , Council Chambers , 303 W. Commonwealth Avenue , Fullerton , CA 92832 .'
answer:
meets


question:
Given Relationship: 'executive', Sentence: '" While this ranking is certainly a great external affirmation , what really matters is our responsibility to care for our patients and to advance the field of pediatric medicine , " says Steven M. Altschuler , MD , president and chief executive officer of the Children 's Hospital of Philadelphia .'
answer:

executive