title: How to determine whether a given sentence is demanding an answer or is providing some information?
body: <p>I tried with basic thing like whether question starts with "who/what/.." but there are a lot many sentences which do not start with interrogative words but still demands an answer like "hotels in singapore". </p>
  
  <p>I have boiled down the logic that the sentences that are not providing some information but are incomplete in that sense, could fall in the interrogative class only. Are there some references for this topic?</p>