detect an inconsistency in data accepted into {HEAD ~ the system} with {TAIL ~ a rule} from the third set of rules 
with
detect an inconsistency in data accepted into { HEAD ~ the system } with { TAIL ~ a rule } from the third set of rules
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH