anchor.diff:  http://www.dfid.gov.uk/what-we-do/research-and-evidence/case-studies/research-case-studies/2008/supporting-science-journalism,https://www.gov.uk/government/case-studies/dfid-research-supporting-science-journalism-in-africa-and-the-middle-east,418
   http://www.dfid.gov.uk/what-we-do/research-and-evidence/case-studies/research-case-studies/2008/sweet-success,https://www.gov.uk/government/case-studies/dfid-research-sweet-success-of-bolivias-bitter-potato,418
   http://www.dfid.gov.uk/what-we-do/research-and-evidence/case-studies/research-case-studies/2008/the-camera-never-lies,https://www.gov.uk/government/case-studies/dfid-research-the-camera-never-lies-childrens-views-of-health-in-their-communities,418
  -http://www.dfid.gov.uk/what-we-do/research-and-evidence/case-studies/research-case-studies/2009/activism-and-aid,https://www.gov.uk/government/case-studies/dfid-research-activism-and-aid-combine-to-fight-hiv-aids-in-south-africa,418
  +http://www.dfid.gov.uk/what-we-do/research-and-evidence/case-studies/research-case-studies/2009/activism-and-aid,https://www.gov.uk/government/case-studies/dfid-research-activism-and-aid-combine-to-fight-hivaids-in-south-africa,301
   http://www.dfid.gov.uk/what-we-do/research-and-evidence/case-studies/research-case-studies/2009/afghan-warlords,https://www.gov.uk/government/case-studies/dfid-research-understanding-the-afghan-warlords,418
  -http://www.dfid.gov.uk/what-we-do/research-and-evidence/case-studies/research-case-studies/2009/age-of-enrolment,https://www.gov.uk/government/case-studies/dfid-research-give-a-child-a-birthday-tracking-age-of-school-enrolment-in-ghana,418
  +http://www.dfid.gov.uk/what-we-do/research-and-evidence/case-studies/research-case-studies/2009/age-of-enrolment,https://www.gov.uk/government/case-studies/dfid-research-tracking-the-age-of-school-enrolment-in-ghana,301
   http://www.dfid.gov.uk/what-we-do/research-and-evidence/case-studies/research-case-studies/2009/agriculture-on-air,https://www.gov.uk/government/case-studies/dfid-research-agriculture-on-air,418
  -http://www.dfid.gov.uk/what-we-do/research-and-evidence/case-studies/research-case-studies/2009/blazing-a-trail,https://www.gov.uk/government/case-studies/dfid-research-blazing-a-trail-for-forest-rights-in-nepal,418
  +http://www.dfid.gov.uk/what-we-do/research-and-evidence/case-studies/research-case-studies/2009/blazing-a-trail,https://www.gov.uk/government/case-studies/dfid-research-managing-forest-rights-in-nepal,301
   http://www.dfid.gov.uk/what-we-do/research-and-evidence/case-studies/research-case-studies/2009/connecting-researchers,https://www.gov.uk/government/case-studies/dfid-research-connecting-researchers-journalists-and-activists-to-change-policy,418
   http://www.dfid.gov.uk/what-we-do/research-and-evidence/case-studies/research-case-studies/2009/does-media-help,https://www.gov.uk/government/case-studies/dfid-research-does-the-media-help-or-harm-in-potentially-divisive-elections,418
   http://www.dfid.gov.uk/what-we-do/research-and-evidence/case-studies/research-case-studies/2009/ensuring-education,https://www.gov.uk/government/case-studies/dfid-research-ensuring-education-doesnt-leave-disabled-youth-behind,418
  
positive.code: http://www.dfid.gov.uk/what-we-do/research-and-evidence/case-studies/research-case-studies/2011/shujaaz,https://www.gov.uk/government/case-studies/dfid-research-shujaaz-market-research-shows-promise-of-comics-for-disseminating-agricultural-information,418
  http://www.dfid.gov.uk/what-we-do/research-and-evidence/case-studies/research-case-studies/2011/taking-plants-to-the-doctor,https://www.gov.uk/government/case-studies/dfid-research-taking-plants-to-the-doctor-plant-health-clinics-from-bolivia-to-bangladesh,418
  http://www.dfid.gov.uk/what-we-do/research-and-evidence/case-studies/research-case-studies/2011/tb-in-the-workplace-,https://www.gov.uk/government/case-studies/dfid-research-tb-in-the-workplace-the-case-of-garment-workers-in-bangladesh,418
  http://www.dfid.gov.uk/what-we-do/research-and-evidence/case-studies/research-case-studies/2011/transforming-mental-health-legislation,https://www.gov.uk/government/case-studies/dfid-research-transforming-mental-health-legislation-the-case-of-zambia,418
  http://www.dfid.gov.uk/what-we-do/research-and-evidence/case-studies/research-case-studies/2011/who-guidelines-for-malaria,https://www.gov.uk/government/case-studies/dfid-research-second-edition-of-who-guidelines-for-the-treatment-of-malaria,418
  http://www.dfid.gov.uk/what-we-do/research-and-evidence/case-studies/research-case-studies/2012/at-this-bank-for-vegetables-withdrawals-produce-interest-,https://www.gov.uk/government/case-studies/dfid-research-vegetable-genebank-is-a-valuable-resource-for-plant-breeders,301
  http://www.dfid.gov.uk/what-we-do/research-and-evidence/case-studies/research-case-studies/2012/dfids-policy-opens-up-a-world-of-global-research,https://www.gov.uk/government/case-studies/dfid-research-dfids-policy-opens-up-a-world-of-global-research,301
  http://www.dfid.gov.uk/what-we-do/research-and-evidence/case-studies/research-case-studies/2012/improving-the-quality-and-scope-of-research-coverage-in-africa,https://www.gov.uk/government/case-studies/dfid-research-improving-the-quality-and-scope-of-research-coverage-in-africa,301
  
negative.code: http://www.dfid.gov.uk/stories/case-studies/2011/coffee-and-commodities,https://www.gov.uk/government/case-studies/fair-exchange,418
  http://www.dfid.gov.uk/stories/case-studies/2011/cottoning-on-to-the-power-of-the-private-sector,https://www.gov.uk/government/case-studies/cottoning-on-to-the-power-of-the-private-sector,418
  http://www.dfid.gov.uk/stories/case-studies/2011/engaging-local-people-in-carbon-markets,https://www.gov.uk/government/case-studies/engaging-local-people-in-carbon-markets,418
  http://www.dfid.gov.uk/stories/case-studies/2011/fighting-for-womens-rights-in-nepal,https://www.gov.uk/government/case-studies/fighting-for-womens-rights-in-nepal,301
  http://www.dfid.gov.uk/stories/case-studies/2011/food-for-families-in-gaza,https://www.gov.uk/government/case-studies/food-for-families-in-gaza,418
  http://www.dfid.gov.uk/stories/case-studies/2011/girls-determination-to-get-an-education,https://www.gov.uk/government/case-studies/girls-determined-to-get-an-education,418
  http://www.dfid.gov.uk/stories/case-studies/2011/goodbye-guinea-worm,https://www.gov.uk/government/case-studies/goodbye-guinea-worm,418
  