More specifically, {HEAD ~ the present invention} relates to {TAIL ~ cast iron alloys} which contain relatively high levels of aluminum, yet are not brittle 
relates to
More specifically , { HEAD ~ the present invention } relates to { TAIL ~ cast iron alloys } which contain relatively high levels of aluminum , yet are not brittle
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH