instruction:
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: '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'
answer:
be capital of


question:
Sentence: 'But that was exactly what John McCain chose when he picked Palin .', Argument/Subject 1: 'mccain', Argument/Subject 2: 'palin'
answer:
choose


question:
Sentence: 'Darfur Rebels Say Sudanese Army Attacked Their Bases VOA 06 Sep 2008 -- Rebels in Sudan 's Darfur region say they have come under heavy attack by government troops with many dead and injured .', Argument/Subject 1: 'darfur', Argument/Subject 2: 'sudan'
answer:

be region of