anchor.diff:  "/fit-note-statement-fitness-to-work","sickness"
   "/student-finance-calculator","student"
   "/apply-for-student-finance-2012-13","student finance"
  -"/income-support","support"
   "/driving-theory-test","theory"
   "/register-sorn-statutory-off-road-notification","v890"
   "/working-tax-credit","working"
   "/benefits-adviser","benefit, rates"
  -"/enhanced-rider-scheme/overview","rpmt"
  +"/enhanced-rider-scheme","rpmt"
   "/dla-disability-living-allowance-benefit","disability"
  -"/mot-your-vehicle/overview","mot"
  -"/wills-probate-inheritance/overview","probate"
  +"/getting-an-mot","mot"
  +"/wills-probate-inheritance","probate"
   "/employment-status","self"
   "/become-self-employed/information-and-support-for-new-businesses","self"
   "/exchange-paper-driving-licence-photocard-licence","d1"
   "/find-job/introduction","vacancies"
  -"/jobseekers-allowance#how-to-claim","rapid reclaim"
  +"/jobseekers-allowance","rapid reclaim"
   "/change-photo-driving-licence","d798"
  -"/looking-after-children-divorce/overview","agency"
  +"/looking-after-children-divorce","agency"
   "/apply-blue-badge","blue badge"
  -"/after-a-death/overview","death"
  +"/after-a-death","death"
   "/carers-allowance","carers"
   "/carers-credit","carers"
   "/employment-support-allowance","esa50"
  -"/register-birth","birth"
  -"/register-birth","baby"
  +"/register-birth","birth, baby"
   "/work-in-another-eu-country","working abroad, work abroad"
   "/set-up-sole-trader","sole trader, soletrader"
   "/starting-a-business","starting, starting a business, starting up a business"
   "/business-rates-calculator","business rates, business rates calculator"
   "/apply-for-business-rate-relief","business rate relief"
  -"/employer-direct-online","employer direct, employerdirect"
   "/search-for-trademark","trademark, trade mark"
   "/register-a-trademark","trademark, trade mark"
   "/register-a-company-online","company"
  
positive.code: "/uk-system-of-government","downing street, downing st, number 10, number ten"
  "/claim-tax-credits","credit"
  "/car-tax-disc-vehicle-licence","car"
  "/cold-weather-payment","cold"
  "/council-tax","council"
  "/maximum-weekly-working-hours","directive"
  "/practical-driving-test-for-cars-motorbike","driving test"
  "/employment-support-allowance","employment"
  "/housing-benefit","housing benefit"
  "/incapacity-benefit","incapacity"
  
negative.code: "/file-an-annual-return-with-companies-house","annual return"
  "/file-changes-to-a-company-with-companies-house","company"
  "/licence-finder","licence, license"
  "/child-benefit","child"
  "/affordable-home-ownership-schemes","first buy"
  "/inheritance-tax","inheritance"