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 invent by', Sentence: 'When Tim Berners-Lee invented the World Wide Web , he gave the world a new medium for publishing content , both personal and professional .'

A: invented
****
Q: Given Relationship: 'be chairman of', Sentence: 'Alan Greenspan , the Chairman of the U.S. Federal Reserve , the current U.S. administration , and U.S. politicians of all stripes could teach a few lessons to those who dictated the level of inflation ahead of them .'

A: Chairman
****
Q: Given Relationship: 'be country in', Sentence: 'I also traveled to many other countries in Western Europe , including four trips to Eastern European countries , such as the Czech Republic , former East Germany , Hungary , the Ukraine and Yugoslavia .'

A:
countries
****