What airlines fly from Burbank to Denver?

Which flights depart Burbank after noon and arrive in Denver by six p.m?

Whose flights serve breakfast?


Examples for wh-subject-question from ATIS corpus

Sentence structure  for wh-subject-question

wh-subject-question structure is identical to the declarative structure, except that
the first noun phrase contains some wh-word.

San Jose State University

wh-question sentences have the most complex structure.

These sentences contain a wh-phrase, that wh-word is, one that includes a wh-word (who, whose, when, where, what, which, how, why)

There are two types of wh-question sentence structures

- wh-subject-question
- wh-non-subject-question

wh-questions

An on-going but a helpful book resource about NLP
https://web.stanford.edu/~jurafsky/slp3/

Speech and Language Processing (3rd ed. draft) 

wh-subject-question

wh-non-subject-question structure, the wh-phrase is not the subject of the wh-non-subjectquestion sentence, and so the sentence includes another subject

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