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.

Ex Input:
Given Relationship: 'invade', Sentence: 'Hitler has invaded Poland .'

Ex Output:
invaded


Ex Input:
Given Relationship: 'be operate in', Sentence: 'The Web Site is operated by API from its offices within the United States , more specifically Alabama , and all information provided by you and gathered by API is processed in the United States .'

Ex Output:
operated


Ex Input:
Given Relationship: 'present at', Sentence: 'Paper presented at the Workshop on Ecological Aspects of Vegetable Fertilization in Integrated Crop Production in the Field , September 7-11 , 1992 , Wadenswil , Switzerland .'

Ex Output:

presented