Q: 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: 'Valenti , president of the Motion Picture Association of America from 1966 to 2004 , is also remembered for having fathered the modern movie ratings system , acting as an advisor to Lyndon Johnson , and for being an irrepressably grandiloquent speaker .', Argument/Subject 1: 'valentus', Argument/Subject 2: 'motion picture association of america'
A:
be president of