anchor.diff:  http://www.dfid.gov.uk/stories/case-studies/2010/positive-about-stopping-hiv-suffering,https://www.gov.uk/government/case-studies/positive-about-stopping-hiv-suffering,418
   http://www.dfid.gov.uk/stories/case-studies/2010/prevention-of-mother-to-child-transmission,https://www.gov.uk/government/case-studies/a-generation-free-of-hiv,418
   http://www.dfid.gov.uk/stories/case-studies/2010/rations-and-child-screening-make-for-healthier-picture-in-eritrea,https://www.gov.uk/government/case-studies/rations-and-child-screening-make-for-healthier-picture-in-eritrea,418
  -http://www.dfid.gov.uk/stories/case-studies/2010/rebuilding-malawi-after-the-earthquake,https://www.gov.uk/government/case-studies/malawi-building-back-better-and-safer,418
  +http://www.dfid.gov.uk/stories/case-studies/2010/rebuilding-malawi-after-the-earthquake,https://www.gov.uk/government/case-studies/rebuilding-malawi-after-the-earthquake,301
   http://www.dfid.gov.uk/stories/case-studies/2010/river-of-hope-adapting-to-a-changing-climate-in-mozambique,https://www.gov.uk/government/case-studies/river-of-hope-adapting-to-a-changing-climate-in-mozambique,418
   http://www.dfid.gov.uk/stories/case-studies/2010/rural-roads-boost-ethnic-minority-livelihoods-in-vietnam-,https://www.gov.uk/government/case-studies/rural-roads-boost-ethnic-minority-livelihoods-in-vietnam,418
   http://www.dfid.gov.uk/stories/case-studies/2010/saving-lives-restoring-hope-in-haiti,https://www.gov.uk/government/case-studies/saving-lives-restoring-hope-in-haiti,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/the-right-to-be-safe-improving-maternal-health-and-health-equity-in-tanzania,https://www.gov.uk/government/case-studies/dignity-and-relief-after-years-of-suffering,418
  http://www.dfid.gov.uk/stories/case-studies/2011/were-getting-there,https://www.gov.uk/government/case-studies/were-getting-there,418
  http://www.dfid.gov.uk/stories/case-studies/2011/wfp---supplementary-feeding,https://www.gov.uk/government/case-studies/protecting-the-vulnerable-in-kenya,418
  http://www.dfid.gov.uk/stories/case-studies/2011/zambian-soap-stars-spread-the-word-on-family-planning,https://www.gov.uk/government/case-studies/zambian-soap-stars-spread-the-word-on-family-planning,301
  http://www.dfid.gov.uk/stories/case-studies/2012/a-chance-to-grow,https://www.gov.uk/government/case-studies/a-chance-to-grow,418
  http://www.dfid.gov.uk/stories/case-studies/2012/afghan-jeweller-eyes-glittering-career,https://www.gov.uk/government/case-studies/crafting-jewellery-and-a-glittering-career,418
  http://www.dfid.gov.uk/stories/case-studies/2012/building-bridges-in-pakistan,https://www.gov.uk/government/case-studies/building-bridges-to-re-connect-cut-off-communities-in-pakistan,301
  