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: 'CHE held a highly successful National Conference this year on October 13 at the University of California San Francisco School of Medicine with a special focus on cancer and heart disease .', Argument/Subject 1: 'conference', Argument/Subject 2: 'californium'
A:
be hold in