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.
--------
Question: Sentence: 'It runs on Microsoft Windows , Apple Mac OS X , and Linux , and is available in several versions .', Argument/Subject 1: 'window', Argument/Subject 2: 'mac'

Answer: run on


Question: Sentence: 'Italy invaded Greece in October 1940 via Albania but was forced to withdraw after a few months .', Argument/Subject 1: 'greece', Argument/Subject 2: 'italy'

Answer: be invade by


Question: Sentence: 'Plouffe will join with other political powerhouses like Elaine Chao , former Labor Department secretary , Tom Ridge , former secretary for the Department of Homeland Security , and columnist Eugene Robinson of the Washington Post .', Argument/Subject 1: 'eugene robinson', Argument/Subject 2: 'washington post'

Answer:
be columnist for