The federated folder and its associated storage structure have {HEAD ~ the capability} to save {TAIL ~ its instances} persistently 
to save
The federated folder and its associated storage structure have { HEAD ~ the capability } to save { TAIL ~ its instances } persistently
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH