Low-level model entity interface for meaning representation
Low-level model entity interface for wordrepresentation
Model entity interface for word article representation

Word article - word with its meaning. It is used for determination the right meaning for every word.
Merge branch 'djachenko'

* djachenko:
  Model entity interface for word article representation
  Low-level model entity interface for wordrepresentation
  Low-level model entity interface for meaning representation