Accordingly, each database can compare their respective benefit data with {HEAD ~ the benefit data} of the neediest database on {TAIL ~ the system} 
Accordingly , each database can compare their respective benefit data with { HEAD ~ the benefit data } of the neediest database on { TAIL ~ the system }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL