abstract Demo =  
  Noun - [AdvCN,PredetNP,PPartNP,RelNP,RelCN,SentCN,ApposCN,MassNP,DetNP],
--  Verb,
  Clause, -- 
  Adjective - [SentAP],
  Adverb,
  Numeral,
--  Sentence, 
  Question - [QuestVP,QuestSlash],
----  Relative,
----  Conjunction,
  Phrase,
----  Text,
----  Idiom,
  Structural - [everybody_NP,everything_NP,something_NP],
  Lexicon ;