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.

[Q]: Sentence: 'The election of Illinois Senator Barack Obama as America 's 44th president is astounding , historical , implausible , improbable and completely without precedent in the history of the United States .', Argument/Subject 1: 'obama', Argument/Subject 2: 'america'
[A]: be president of


[Q]: Sentence: 'Chancellor 's Office Collection consists of the administrative records of the Chancellor 's of the California State University System .', Argument/Subject 1: 'university', Argument/Subject 2: 'chancellor'
[A]: consist of


[Q]: Sentence: 'Then , heading inland , youl cross a forbidding stretch of amazingly flat and empty desert before circumnavigating the spectacular 2,573m Brandberg Massif , Namibia highest mountain and a National Monument .', Argument/Subject 1: 'brandberg', Argument/Subject 2: 'namibium'
[A]:
be mountain in