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: 'Learn everything you need to know about WebSphere Portal at the IBM WebSphere Portal Technical Conference being held in Nashville , Tennessee USA , October 13 -16 2008 and October 6-8 in Berlin , Germany .', Argument/Subject 1: 'conference', Argument/Subject 2: 'october'
hold in