In another embodiment {HEAD ~ the retrieval process} occurs via {TAIL ~ a computer network} such as the Internet 
In another embodiment { HEAD ~ the retrieval process } occurs via { TAIL ~ a computer network } such as the Internet
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH