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 leader of', Sentence: 'The leader of the U.S. House of Representatives , Speaker Nancy Pelosi , toured Jerusalem holy sites Saturday alongside a congressional delegation that included Democratic Rep. Keith Ellison , the first Muslim elected to Congress .'

Answer: leader


Question: Given Relationship: 'be form of', Sentence: 'This suggests that ATIVAN is a very buried form of ASD.'

Answer: form


Question: Given Relationship: 'stand for', Sentence: 'USP stands for Unique Selling Proposition .'

Answer:
stands