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.

Example Input: Given Relationship: 'be president of', Sentence: 'Egypt 's President Hosni Mubarak is receiving tomorrow Palestinian President Yasser Arafat who is visiting Egypt before heading to Washington to attend the three-way summit that was urged on by the U.S President Bill Clinton and will be attended by Arafat and Israeli Prime Minister Ehud Barak .'
Example Output: President

Example Input: Given Relationship: 'provide to', Sentence: 'In a way this is a good thing because , Google would be able to serve better ads and provide even better services by understanding the Internet user behavior .'
Example Output: provide

Example Input: Given Relationship: 'buy', Sentence: 'Viagra - re -10-: 00:18 : been clearly proven all slots downloads lactose online casino ies and caregivers buy generic viagra usually there is . .'
Example Output:
buy