diagnostics
add "essere" which takes an intensifier-phrase (e.g. "piu ricca di Giorgio") as a complement.
commenting-out rules to debug vp -> essere + intensifier-phrase
intensifier sentences work now e.g. Giorgio è più difficile di il suo studente (Giorgio is more difficult than his student).
fix Giorgio: add agr information
back to log/debug
use new default workbook action: 

(fo (take 1 (repeatedly #(random-sentence))))

rather than

(fo (random-sentence))
re-enable expansions that were commented-out for debugging intensifier phrases
add essere-adjective to list of transitive verbs
Add "Paola" as a person's name