said {HEAD ~ hole} is covered by {TAIL ~ a sealing label} comprising a metal thin film and an adhesive layer 
is covered by
said { HEAD ~ hole } is covered by { TAIL ~ a sealing label } comprising a metal thin film and an adhesive layer
OTH HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH