Watch for "Symbols" like I said in the central algorithm. Symbols resolve into more complex statements. These are called DSL's , domain specific languages. The police have their own, perp, 187, etc… Starbucks has their own, in a few short phrases can describe over 1,000 drink combinations. Hospitals have their own which may be general, or local to certain domains. The important point is to find them and by observations and interrogations, find their true meanings. I was told only one by a doctor, then realized, how often I had seen medical records with markings that had no meaning to me but it does to them. They stay under the radar this way.