Given a sentence and two mentions from the text (arguments), indicate a phrase (a verb or noun phrase) that describes the relationship between the provided arguments.

Q: Sentence: 'Polls show Obama leading in Oregon , where 52 delegates are up for grabs , while Clinton is ahead in Kentucky , a state with 51 delegates that has a similar demographic to West Virginia , where she won a thumping victory Tuesday .', Argument/Subject 1: 'obama', Argument/Subject 2: 'oregon'

A: lead in
****
Q: Sentence: 'David Wood-Gush was born in South Africa and received a B.Sc. from the University of Witwatersrand , Johannesburg , and a Ph.D. from the University of Edinburgh .', Argument/Subject 1: 'david', Argument/Subject 2: 'south africa'

A: be bear in
****
Q: Sentence: 'Economist and New York Times columnist Paul Krugman explains in simple terms how the American economy went from having the world 's most dynamic middle class to being on the verge of a rich-poor state in only 30 years .', Argument/Subject 1: 'paul krugman', Argument/Subject 2: 'new york time'

A:
be columnist for
****