If the customer causes the machine to connect {HEAD ~ a server} operated by {TAIL ~ a foreign institution}, the HTML documents sent from the foreign institution correspond to those normally provided by the foreign institution 
operated by
If the customer causes the machine to connect { HEAD ~ a server } operated by { TAIL ~ a foreign institution } , the HTML documents sent from the foreign institution correspond to those normally provided by the foreign institution
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH