{HEAD ~ A catalyst} 3 comprising {TAIL ~ 4.0 wt % nickel} and 15.0 wt % tungsten 
comprising
{ HEAD ~ A catalyst } 3 comprising { TAIL ~ 4.0 wt % nickel } and 15.0 wt % tungsten
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH