The knowledge base system includes an interface device that receives said knowledge base by a user, and a generating device that generates {HEAD ~ a program} based upon {TAIL ~ the knowledge base} 
based upon
The knowledge base system includes an interface device that receives said knowledge base by a user , and a generating device that generates { HEAD ~ a program } based upon { TAIL ~ the knowledge base }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL