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 group in', Sentence: 'By plotting the progress of three foreign-born Hispanic age cohorts who entered the United States by 1980 and three native born Hispanic age groups , it is possible to evaluate the extent to which particular groups are making progress over time .'

A: groups
****
Q: Given Relationship: 'be chairman of', Sentence: 'Alan Greenspan , Chairman of the Board of Governors of the Federal Reserve System , gave the conference keynote address .'

A: Chairman
****
Q: Given Relationship: 'buy by', Sentence: 'Whether or not Google buys YouTube , I think one other web property they 'll be thinking about is MySpace .'

A:
buys
****