{HEAD ~ The present invention} relates to the general art of face shields, and to {TAIL ~ the particular field} of face shields for protecting a wearer from sun 
relates to
{ HEAD ~ The present invention } relates to the general art of face shields , and to { TAIL ~ the particular field } of face shields for protecting a wearer from sun
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH