Get the first NP in questions of the form: is NP1 NP2?
Get the second NP in questions of the form: is NP1 NP2?.
Try to get the object of a declarative sentence.
Get the subject, which should be the first NP.
Try to get the main verb of the sentence. TODO: fix problems with conjunctions and adverbial phrases…
Get a more abstract linguistic representation of the parse
Strip r of constituent tags.
[Validate]