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.

Q: 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 .'

A: leader
****
Q: Given Relationship: 'attack', Sentence: 'Hitler attacked Poland on September 1 .'

A: attacked
****
Q: Given Relationship: 'be base on', Sentence: 'You could argue that the Internet is based on Unix networking techniques , or conversly that UNIX was born into Internet standards .'

A:
based
****