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: 'December : Grossman the key speaker at an ATC Conference held at the Omni Shoreham Hotel .', Argument/Subject 1: 'conference', Argument/Subject 2: 'omnus shoreham hotel'
A:
be hold at