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.

Ex Input:
Sentence: 'The largest French-speaking city in North America , Montreal often is referred to as Canada 's New York City .', Argument/Subject 1: 'new york city', Argument/Subject 2: 'america'

Ex Output:
be city in

Ex Input:
Sentence: 'Israel is unlawfully occupying Gaza and the West Bank , which is a violation the United Charter and invalidates the right of ?self-defence under article 51 .', Argument/Subject 1: 'israel', Argument/Subject 2: 'west bank'

Ex Output:
occupy

Ex Input:
Sentence: 'Charlotte is a U.S. Airways hub , if you need to fly often .', Argument/Subject 1: 'charlotte', Argument/Subject 2: 'us airway'

Ex Output:
be hub for