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.

Input: Consider Input: Given Relationship: 'attack', Sentence: 'If China would choose to ever attack Taiwan , with such a huge force , the U.S. would have great difficulty repelling such a large military that could quickly overrun the Island .'

Output: attack

Input: Consider Input: Given Relationship: 'open on', Sentence: 'Registration for Cybernet Expo will open in February .'

Output: open

Input: Consider Input: Given Relationship: 'report to', Sentence: 'The Board Secretary reports directly to the Executive Director .'
Output: reports