Given the task definition and input, reply with output. 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: 'I keep getting in strange arguments , on liberal Web sites , with liberals , about the absurd Constitutional provision prohibiting naturalized citizens ' becoming president or vice president .', Argument/Subject 1: 'vice president', Argument/Subject 2: 'president'
become