Sentence:  `` This is a great national cultural asset , and therefore it is a great source of satisfaction to me , <WSD>representing</WSD> as I do today my wife , to welcome all of you here today at the White House '' . 
Meaning of the word marked with <WSD> tags:  be a delegate or spokesperson for; represent somebody's interest or be a proxy or substitute for, as of politicians and office holders representing their constituents, or of a tenant representing other tenants in a housing dispute