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: 'Many visitors choose the fall to visit Columbia , the state capital and largest city in South Carolina , when days are cooler and outdoor attractions are plentiful .', Argument/Subject 1: 'columbium', Argument/Subject 2: 'south carolina'
be state capital of