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.

Example Input: Sentence: 'Gradually the official language of Ukrainian provinces under Poland was changed to Polish , while the upper classes in the Russian part of Ukraine used Russian widely .', Argument/Subject 1: 'polish', Argument/Subject 2: 'poland'
Example Output: be language of

Example Input: Sentence: 'Sony Computer Entertainment Europe has released this week 's European PlayStation Store update , adding a plethroa of new games , DLC , videos , and more .', Argument/Subject 1: 'sony', Argument/Subject 2: 'playstation'
Example Output: release

Example Input: Sentence: 'Washington Post columnist Sebastian Mallaby has an interesting op-ed today inspired by news of Microsoft chairman Bill Gates ' tour of college campuses , urging students to consider majoring in computer science .', Argument/Subject 1: 'bill gate', Argument/Subject 2: 'microsoft'
Example Output:
be chairman of