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.

Ex Input:
Sentence: 'London is both the capital of England and the United Kingdom and it serves as the headquarters for the Royal Family .', Argument/Subject 1: 'london', Argument/Subject 2: 'england'

Ex Output:
be capital of


Ex Input:
Sentence: 'In versions of Windows before Windows Vista , the Administrator account was n't hidden , and many people used it as their main or only account .', Argument/Subject 1: 'vista', Argument/Subject 2: 'window'

Ex Output:
be version of


Ex Input:
Sentence: 'Dad 's the Boss , Mom said so .', Argument/Subject 1: 'dad', Argument/Subject 2: 'mom'

Ex Output:

say to