title: custom named entity extraction
body: <p>I'm trying to implement NER(Named Entity Extraction) using stanford NLP. 
  final goal is to convert free text to query format.
  I created a custom dictionary and am able to extract entities and build query</p>
  
  <pre><code>people who are from newyork
  </code></pre>
  
  <p>I'll build query</p>
  
  <pre><code>     select * from people where region = 'newyork'
  </code></pre>
  
  <p>but the issue comes when the statement is negated </p>
  
  <p>people who are not from newyork</p>
  
  <p>How to extract negative scenario from this statement, Is there any way possible even outside of stanford NLP</p>
  
  <p>Any help is appreciated</p>