{HEAD ~ another field} that stores {TAIL ~ a computing equation} of declarative representation that utilizes said knowledge variables, using operands as other knowledge variables; and 
stores
{ HEAD ~ another field } that stores { TAIL ~ a computing equation } of declarative representation that utilizes said knowledge variables , using operands as other knowledge variables ; and
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH