{HEAD ~ The concentration} of the para aminoacetanilide is determined by {TAIL ~ a color test} in which the para aminoacetanilide was reacted with phenol 
is determined by
{ HEAD ~ The concentration } of the para aminoacetanilide is determined by { TAIL ~ a color test } in which the para aminoacetanilide was reacted with phenol
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH