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: 'I could not have been in a better place to witness Barack Obama elected president of the United States .', Argument/Subject 1: 'obama', Argument/Subject 2: 'unite state'
answer:
be president of

question:
Sentence: 'Colchester in Essex is the oldest recorded town in England .', Argument/Subject 1: 'colchester', Argument/Subject 2: 'essex'
answer:
be town in

question:
Sentence: 'Queensland is a member state of the Commonwealth of Australia .', Argument/Subject 1: 'queensland', Argument/Subject 2: 'australium'
answer:
be state in