anchor.diff:  http://www.swyddfa.cymru.gov.uk/2012/09/18/comisiwn-silk-yn-hysbysu-ysgrifennydd-cymru-am-y-datblygiadau,,410
   http://www.swyddfa.cymru.gov.uk/2012/09/19/gweinidog-swyddfa-cymru-yn-nodi-agor-gorsaf-bwer-penfro,https://www.gov.uk/government/news/wales-office-minister-marks-opening-of-pembroke-power-station.cy,301
   http://www.swyddfa.cymru.gov.uk/2012/09/19/gweinidog-swyddfa-cymru-yn-nodi-agor-gorsaf-bwer-penfro-2,,410
  -http://www.swyddfa.cymru.gov.uk/2012/09/20/caerdydd-yn-sicrhau-buddsoddiad-11-9-miliwn-mewn-band-eang,https://www.gov.uk/government/news/cardiff-secures-11-9million-broadband-investment.cy,301
  +http://www.swyddfa.cymru.gov.uk/2012/09/20/caerdydd-yn-sicrhau-buddsoddiad-11-9-miliwn-mewn-band-eang,https://www.gov.uk/government/news/cardiff-secures-11-9-million-broadband-investment.cy,301
   http://www.swyddfa.cymru.gov.uk/2012/09/20/ysgrifennydd-cymru-yn-llongyfarch-enillydd-gwobr-merch-fusnes-ifanc,https://www.gov.uk/government/news/welsh-secretary-congratulates-young-woman-of-business-winner.cy,301
   http://www.swyddfa.cymru.gov.uk/2012/09/28/gweinidog-swyddfa-cymru-wedi-ymrwymo-i-ddatblygu-sector-ynni-cymru-2,https://www.gov.uk/government/news/wales-office-minister-committed-to-developing-welsh-energy-sector.cy,301
   http://www.swyddfa.cymru.gov.uk/2012/10/03/yr-ysgrifennydd-gwladol-yn-croesawu-buddsoddiad-hdm-steel-o-7m,https://www.gov.uk/government/news/welsh-secretary-welcomes-7m-hdm-steel-investment.cy,301
  
positive.code: http://www.swyddfa.cymru.gov.uk/2012/11/11/gweinidogion-swyddfa-cymru-i-nodi-sul-y-cofio-2,https://www.gov.uk/government/news/wales-office-ministers-mark-remembrance-sunday.cy,301
  http://www.swyddfa.cymru.gov.uk/2012/11/12/ysgrifennydd-cymru-general-dynamics-uk-yn-arloesi-yn-edge,https://www.gov.uk/government/news/welsh-secretary-general-dynamics-uk-at-cutting-edge-of-innovation.cy,301
  http://www.swyddfa.cymru.gov.uk/2012/11/14/ysgrifennydd-cymru-yn-ymateb-i-ystadegaur-farchnad-lafur,https://www.gov.uk/government/news/welsh-secretary-responds-to-labour-market-statistics--3.cy,301
  http://www.swyddfa.cymru.gov.uk/2012/11/15/gweinidog-swyddfa-cymru-yn-gweld-y-gymdeithas-fawr-ar-waith-yn-y-rhondda,https://www.gov.uk/government/news/wales-office-minister-sees-big-society-in-action-in-rhondda.cy,418
  http://www.swyddfa.cymru.gov.uk/2012/11/16/cronfa-dreftadaeth-y-loteri-yn-darparu-arian-i-ddiogelu-safle-hollbwysig-yr-ysgwrn,https://www.gov.uk/government/news/heritage-lottery-fund-provides-funding-to-protect-important-site-yr-ysgwrn.cy,301
  http://www.swyddfa.cymru.gov.uk/2012/11/19/llywodraeth-y-du-yn-croesawu-adroddiad-ar-ddatganoli-pwerau-cyllidol-i-gymru,https://www.gov.uk/government/news/uk-government-welcomes-report-on-welsh-fiscal-devolution.cy,418
  http://www.swyddfa.cymru.gov.uk/2012/11/21/cymru-fydd-y-cyntaf-i-gael-band-eang-cyflym-iawn-yn-dilyn-sel-bendith-brwsel,https://www.gov.uk/government/news/wales-broadband-gets-go-ahead-from-brussels.cy,418
  http://www.swyddfa.cymru.gov.uk/2012/11/21/dywedodd-david-jones-ysgrifennydd-gwladol-cymru,https://www.gov.uk/government/news/welsh-secretary-byelaws-judgement-statement.cy,418
  http://www.swyddfa.cymru.gov.uk/2012/11/22/gweinidog-swyddfa-cymru-manteision-posib-dal-carbon,https://www.gov.uk/government/news/wales-office-minister-potential-rewards-from-carbon-capture-immense.cy,418
  http://www.swyddfa.cymru.gov.uk/2012/11/23/datganiad-gan-swyddfa-cymru-mewn-ymateb-i-gyhoeddiad-tata-steel,https://www.gov.uk/government/news/welsh-secretary-statement-in-response-to-tata-steel-announcement.cy,418
  http://www.swyddfa.cymru.gov.uk/2012/11/23/ysgrifennydd-cymru-wedi-ymrwymo-ir-achos-dros-drydaneiddio-yng-ngogledd-cymru,https://www.gov.uk/government/news/welsh-secretary-at-north-wales-rail-electrification-meeting.cy,418
  http://www.swyddfa.cymru.gov.uk/2012/11/26/ysgrifennydd-cymru-yn-cyhoeddi-canlyniad-cadarnhaol-i-gyfarfod-trydaneiddio-gogledd-cymru,https://www.gov.uk/government/news/welsh-secretary-committed-to-rail-electrification.cy,418
  http://www.swyddfa.cymru.gov.uk/2012/11/29/ysgrifennydd-cymru-yn-canmol-yr-ymdrech-gymunedol-ffantastig-ar-ol-y-llifogydd-yng-ngogledd-cymru,https://www.gov.uk/government/news/welsh-secretary-hails-fantastic-community-effort-after-floods.cy,418
  
negative.code: http://www.swyddfa.cymru.gov.uk/2012/09/07/cronfa-fuddsoddi-gwerth-40biliwn-ar-gael-i-prosiectau-seilwaith,https://www.gov.uk/government/news/welsh-infrastructure-projects-could-benefit-from-40-billion-investment-pot.cy,301
  http://www.swyddfa.cymru.gov.uk/2012/09/07/cyhoeddi-adroddiad-blynyddol-swyddfa-cymru,https://www.gov.uk/government/news/wales-office-annual-report-published.cy,301
  http://www.swyddfa.cymru.gov.uk/2012/09/07/david-jones-as-yn-croesawu-tim-gweinidogion-newydd-swyddfa-cymru,https://www.gov.uk/government/news/david-jones-mp-welcomes-new-wales-office-ministerial-team.cy,301
  http://www.swyddfa.cymru.gov.uk/2012/09/07/swydffa-cymru-adroddiad-blynyddol-chyfrifon-2011-12,https://www.gov.uk/government/publications/wales-office-annual-report-and-accounts-2011-to-2012,301
  http://www.swyddfa.cymru.gov.uk/2012/09/10/ysgrifennydd-cymru-yn-falch-o-gyfraniad-cymru-i-gemau-llundain-2012,https://www.gov.uk/government/news/welsh-secretary-hails-wales-contribution-to-london-2012.cy,301
  http://www.swyddfa.cymru.gov.uk/2012/09/10/ysgrifennydd-cymru-yn-llongyfarch-toyota-am-20-mlynedd-o-weithgynhyrchu-yng-nghymru,https://www.gov.uk/government/news/welsh-secretary-hails-toyota-s-20-years-manufacturing-in-wales.cy,301
  http://www.swyddfa.cymru.gov.uk/2012/09/13/ysgrifennydd-cymru-dyfodol-disglair-i-ddiwydiant-niwclear-y-du,https://www.gov.uk/government/news/welsh-secretary-future-for-uk-nuclear-industry-is-bright.cy,301
  