Relevance to find top result

I need to populate my relays with a property from my clients. I need to tattoo the relay with the DHCP domain of the clients they serve. I’ll do that via a web service, but I need help with the “top” part.

This query pulls back what I want, I need to get the “top talker”

(it) 
of (
	(if (exists result (item 0 of it, item 1 of it) and 
		 exists values of result (item 0 of it, item 1 of it) ) 
		then (concatenation "%0A" of values of result (item 0 of it, item 1 of it)) 
		else ("<none>"))) 
of (
	elements of intersection of (
		union of (
			member sets of bes computer groups whose (name of it as lowercase = "win workstations"));
		intersection of (
		(sets of items 0 
			of (computers of it, values whose (it as lowercase = "01100002") of it) 
				of results of bes property "Facility Code"); 
		(sets of items 0 
			of (computers of it, values whose (it as lowercase does not contain "none") of it) 
				of results of bes property "DHCPDomain"))),
	bes property "DHCPDomain")