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: 'Aden became the capital of the new People 's Republic of South Yemen which was renamed the People 's Democratic Republic of Yemen in 1970 .', Argument/Subject 1: 'aden', Argument/Subject 2: 'south yeman'
A:
be capital of