{HEAD ~ The choice} of material will depend on {TAIL ~ a variety} of factors such as the physical and chemical properties of the material being employed 
depend on
{ HEAD ~ The choice } of material will depend on { TAIL ~ a variety } of factors such as the physical and chemical properties of the material being employed
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH