title: Find subject in incomplete sentence with NLTK
body: <p>I have a list of products that I am trying to classify into categories.  They will be described with incomplete sentences like:</p>
  
  <p>"Solid State Drive Housing"</p>
  
  <p>"Hard Drive Cable"</p>
  
  <p>"1TB Hard Drive"</p>
  
  <p>"500GB Hard Drive, Refurbished from Manufacturer"</p>
  
  <p>How can I use python and NLP to get an output like "Housing, Cable, Drive, Drive", or a tree that describes which word is modifying which?
  Thank you in advance</p>