* storing facts and learning rules
* integrate tokenizer into parser to enable morphological analysis
* generator with write grammar
* use sqlite3 to store data in all examples
* Cooper's system (1964) demo
* Bertram Rafael's SIR (1964) demo

* from function based grammar to atom based grammar
* inference engine
* adapters for PostgreSQL, MySQL, Sqlite3, and SPARQL
* parse tree ordering heuristics
* David H.D. Warren's query optimization techniques
* Chat-80 demo
* Wikidata demo