{
 "rules": [
  {
   "conditions": [
    "fever",
    "cough"
   ],
   "conclusion": "flu"
  },
  {
   "conditions": [
    "fever",
    "rash"
   ],
   "conclusion": "measles"
  },
  {
   "conditions": [
    "headache",
    "nausea"
   ],
   "conclusion": "migraine"
  }
 ],
 "note": "rule-based expert system, Book 1 ch.1.2"
}