You will be given a definition of a task first, then some input of the task.
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: 'Peter R. Orszag , Director of the Congressional Budget Office blogs as an additional way to communicate with Congress and the public .', Argument/Subject 1: 'orszag', Argument/Subject 2: 'congressional budget office'
Output:
be director of