anchor.diff:  "python","stopword.web"
   "excel","stopword.web"
   "word","stopword.web"
  +"os","stopword.web"
   "bing","stopword.web"
   "safari","stopword.web"
   "ebay","stopword.web"
  
positive.code: vip,person.label
  patriot,person.label
  male,person.label
  manager,person.label
  master,person.label
  senior,person.label
  
negative.code: "land","place.general"
  "real-estate","place.civil"
  "real estate","place.civil"
  office,"place.civil"
  casino,"place.civil"
  "island","place.general"
  "valley","place.general"
  "ridge","place.general"
  