anchor.diff:  http://og.decc.gov.uk/en/olgs/cms/privacy_cookie/privacy_cookie.aspx,,410
   http://og.decc.gov.uk/en/olgs/cms/tech_papers/conf_papers/conf_/,,410
   http://og.decc.gov.uk/en/olgs/cms/tech_papers/conf_papers/conf_papers.aspx,http://tools.decc.gov.uk/en/content/cms/tools/conf_papers/conf_papers.aspx,301
  -http://og.decc.gov.uk/en/olgs/cms/tech_papers/conf_papers/conf_papers.aspx.,,410
   http://og.decc.gov.uk/en/olgs/cms/tech_papers/conf_papers/heavy_oil_gif/heavy_oil_gif.aspx,,410
   http://og.decc.gov.uk/en/olgs/cms/tech_papers/conf_papers/image1/image1.aspx,,410
   http://og.decc.gov.uk/en/olgs/cms/tech_papers/conf_papers/lcretmf_gif/lcretmf_gif.aspx,,410
  
positive.code: http://og.decc.gov.uk/pprs.htm,,410
  http://og.decc.gov.uk/pprs/%20filetype:pdf,,410
  http://og.decc.gov.uk/pprs/ful_production.htm,,410
  http://og.decc.gov.uk/pprs/full_production.,,410
  http://og.decc.gov.uk/pprs/full_production.htm,,410
  http://og.decc.gov.uk/pprs/full_production.htm.%20f.9.,,410
  http://og.decc.gov.uk/pprs/full_production.htm.,,410
  http://og.decc.gov.uk/pprs/full_production.html,,410
  http://og.decc.gov.uk/pprs/full_production/annual+associated+gas+production+sorted+by+field/annual+associated+gas+production+sorted+by+field.htm,,410
  http://og.decc.gov.uk/pprs/full_production/annual+water+production+sorted+by+field/0.htm,,410
  
negative.code: http://og.decc.gov.uk/information/bb_updates/chapters/,,410
  http://og.decc.gov.uk/information/bb_updates/chapters/chart4_5.gif,,410
  http://og.decc.gov.uk/information/bb_updates/chapters/charts2_4-2_8.htm,,410
  http://og.decc.gov.uk/information/bb_updates/chapters/table3_2.htm,,410
  http://og.decc.gov.uk/information/bb_updates/chapters/table4_3.htm,,410
  http://og.decc.gov.uk/information/bb_updates/chapters/table4_4.htm,,410
  