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.

Sentence: 'Mervyn King , Governor of the Bank of England , has warned on several occasions that retail price deflation is likely this year , and has not ruled out the same for consumer price inflation .', Argument/Subject 1: 'mervyn king', Argument/Subject 2: 'bank of england'
be governor of