This means PoS tagging and a rule-driven engine can have large coverage and reasonable precision with respect to the questions – but it will still be a little tedious to maintain, debug, and generalize this system.
We need a set of better tools that is less reliant on the state of tokens and more on the relationship between them. This will allow you to change the relationship to form a question instead. This is where dependency parsing comes in.
What is a dependency parser?
"A dependency parser analyzes the grammatical structure of a sentence, establishing relationships between "head" words and words which modify those heads."
- from Stanford NNDEP Project
A dependency parser helps ...
