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