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.

Input: Consider 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'

Output: be language of


Input: Consider Input: Sentence: 'V Murder said on Tue , 04/05/2005 - 9:22am .', Argument/Subject 1: 'v murder', Argument/Subject 2: 'tue'

Output: say on


Input: Consider Input: Sentence: 'The Shamrock is a Christian symbol of the Holy Trinity .', Argument/Subject 1: 'shamrock', Argument/Subject 2: 'holy trinity'


Output: be symbol of