In one implementation, {TAIL ~ the benefit data} is stored so that the benefit data can be later accessed by {HEAD ~ a given database} 
In one implementation , { TAIL ~ the benefit data } is stored so that the benefit data can be later accessed by { HEAD ~ a given database }
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD