Detailed Instructions: 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.
Problem:Sentence: 'Berlin - Germany 's most international city - is a city that never sleeps .With three opera houses , 150 theaters , 170 museums and galleries , 130 movie theaters , and numerous bars , clubs , and discos , Berlin is the cultural capital of Germany .', Argument/Subject 1: 'berlin', Argument/Subject 2: 'germany'
Solution:
be capital city of