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: 'be son of', Sentence: 'James and John , the sons of Zebedee , had traveled with Jesus for three years and still they wanted to assume positions of leadership that would give them great prestige , satisfy their egos , and give them power over others .'

Answer: sons

Question: 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 .'

Answer: attack

Question: Given Relationship: 'be republican on', Sentence: 'Charles Grassley of Iowa , the top Republican on the Senate Finance Committee , said , " If our law officers are overlooking the E.U. 's frozen assets list , they 're missing an obvious piece of the anti-terrorism pie . "'

Answer:
Republican