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.
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Question: Given Relationship: 'invade', Sentence: 'He referred to the USA invading Iraq without cause and nothing being done about it .'

Answer: invading


Question: Given Relationship: 'open on', Sentence: 'Registration is now open for the forthcoming test administrations on January 21 and February 10 , 2007 .'

Answer: open


Question: Given Relationship: 'be dean of', Sentence: 'Roper is dean of the School of Medicine , vice chancellor for medical affairs , Stuart Bondurant Distinguished Professor and chief executive officer of the UNC Health Care System .'

Answer:
dean