{HEAD ~ The solution} is poured in a reactor and stirred to get {TAIL ~ a homogeneous mixture} 
{ HEAD ~ The solution } is poured in a reactor and stirred to get { TAIL ~ a homogeneous mixture }
HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL