Feature engineering of a review

I am trying to classify review of paper into these classes
CLASSES:-
Clarity (Writing and Composition)
Appropriateness
Novelty/Originality
Substance/Volume
Significance/Impact
Meaningful Comparison
Presentation & Formatting
Recommendation
Empirical/Theoretical Soundness
Can’t Decide

For this i am doing feature engineering
One feature is am using is noun and adjective of the sentences.
Example:
sentence- This makes a lot of the questions asked in this paper extremely relevant to the field
Noun phrases: [‘a lot’, ‘the questions’, ‘this paper’, ‘the field’]

What more features can i use for this classification problem?