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